Altered Thermal and Mechanical Properties of Spruce Galactoglucomannan Films Modified with an Etherification Reaction.


:Native hemicellulose lacks many of the properties that make fossil fuel-based polymers excellent for use in today's industrial products and processes. The mechanical and thermal properties of the hemicellulose can, however, be modified, and its processability increased. We functionalized galactoglucomannan to lower its glass transition temperature (Tg) and thereby increase its processability. The functionalization was achieved through an etherification reaction with butyl glycidyl ether used at three molar ratios. Films were produced, and their mechanical and thermal properties were evaluated. Thermogravimetric analysis showed that increased substitution increased the degradation temperature and decreased the water content in the sample, implying increased hydrophobicity upon modification. Dynamic mechanical analysis indicated that butyl glycidyl ether functionalization alters the thermal properties of the modified films both in the absolute values of Tg and in the strength of the films. The etherification reaction resulted in a more ductile material than the unmodified galactoglucomannan (GGM).






Härdelin L,Bernin D,Börjesson M,Ström A,Larsson A




Has Abstract


2020-05-11 00:00:00












  • An approach to modulate degradation and mesenchymal stem cell behavior in poly(ethylene glycol) networks.

    abstract::A simple, sequential approach for creation of hydrolytically degradable poly(ethylene glycol) (PEG) hydrogels has been developed and characterized. The chemistry involves an initial step growth polymerization reaction between PEG-diacrylate and dithiothreitol (DTT) to form acrylate-terminated (-PEG-DTT-)n PEG chains, ...


    pub_type: 杂志文章


    authors: Hudalla GA,Eng TS,Murphy WL

    更新日期:2008-03-01 00:00:00

  • Synthesis of photodegradable macromers for conjugation and release of bioactive molecules.

    abstract::Hydrogel scaffolds are used in biomedicine to study cell differentiation and tissue evolution, where it is critical to control the delivery of chemical cues both spatially and temporally. While large molecules can be physically entrapped in a hydrogel, moderate molecular weight therapeutics must be tethered to the hyd...


    pub_type: 杂志文章


    authors: Griffin DR,Schlosser JL,Lam SF,Nguyen TH,Maynard HD,Kasko AM

    更新日期:2013-04-08 00:00:00

  • Coassembly of C13-Dipeptides: Gelations from Solutions and Precipitations.

    abstract::C13-dipeptides that did not gel on their own were found to form hydrogels when combined with mixtures (coassembly). At pH = 4.6, by mixing negatively charged C13-WD (C13-WD2- and/or C13-WD-) with C13-KW or C13-YK, where the side chain of K carried positive charge, two composite hydrogels with different mechanical prop...


    pub_type: 杂志文章


    authors: Hu T,Zhang Z,Euston SR,Geng M,Pan S

    更新日期:2020-12-14 00:00:00

  • Macromolecule-induced assembly of coiled-coils in alternating multiblock polymers.

    abstract::The bioconjugation of proteins and peptides with synthetic polymers is a promising method for tailoring the chemical, biological, and physical properties of both the polymeric and protein-based components. Here, we describe macromolecular assemblies of polyethylene glycol-coiled-coil alternating multiblock polymers gu...


    pub_type: 杂志文章


    authors: Sahin E,Kiick KL

    更新日期:2009-10-12 00:00:00

  • Polyanion hydrophobicity and protein basicity affect protein stability in protein-polyanion complexes.

    abstract::Stability of four dissimilar basic proteins (chymotrypsinogen A, ribonuclease A, cytochrome c, lysozyme) in the complex with four polyanions (heparin, poly(vinylsulfate), poly(4-styrene-sulfonate), Nafion) has been studied by differential scanning calorimetry. The polyanions were chosen because of their different char...


    pub_type: 杂志文章


    authors: Sedlák E,Fedunová D,Veselá V,Sedláková D,Antalík M

    更新日期:2009-09-14 00:00:00

  • Polymersome encapsulated hemoglobin: a novel type of oxygen carrier.

    abstract::Bovine hemoglobin (Hb) was encapsulated inside polymer vesicles (polymersomes) to form polymersome encapsulated Hb (PEH) dispersions. PEH particles are 100% surface PEGylated with longer PEG chains and possess thicker hydrophobic membranes as compared to conventional liposomes. Polymersomes were self-assembled from po...


    pub_type: 杂志文章


    authors: Arifin DR,Palmer AF

    更新日期:2005-07-01 00:00:00

  • Nanocarrier Composed of Magnetite Core Coated with Three Polymeric Shells Mediates LCS-1 Delivery for Synthetic Lethal Therapy of BLM-Defective Colorectal Cancer Cells.

    abstract::Synthetic lethality is a molecular-targeted therapy for selective killing of cancer cells. We exploited a lethal interaction between superoxide dismutase 1 inhibition and Bloom syndrome gene product (BLM) defect for the treatment of colorectal cancer (CRC) cells (HCT 116) with a customized lung cancer screen-1-loaded ...


    pub_type: 杂志文章


    authors: Gupta A,Ahmad A,Singh H,Kaur S,K M N,Ansari MM,Jayamurugan G,Khan R

    更新日期:2018-03-12 00:00:00

  • Hydration of gluten: a dielectric, calorimetric, and fourier transform infrared study.

    abstract::The nature of the hydration of proteins and the subsequent implications for functionality is a matter of importance in both pharmaceutical and food applications. Most published studies rely on the use of one technique and attempt to characterize the system. Few studies have used combinations of techniques. In this pap...


    pub_type: 杂志文章


    authors: Almutawah A,Barker SA,Belton PS

    更新日期:2007-05-01 00:00:00

  • Kinetics of migration of antioxidants from polyolefins in natural environments as a basis for bioconversion studies.

    abstract::Plastics ending up in soil or landfill environment will eventually be degraded. At the same time a slow migration of additives from the plastics will occur. The additives and the degradation products of these and the polymer are potential compounds for bioconversion. To predict the rate of the migration of antioxidant...


    pub_type: 杂志文章


    authors: Haider N,Karlsson S

    更新日期:2000-10-01 00:00:00

  • Design and synthesis of biomimetic multicomponent all-bone-minerals bionanocomposites.

    abstract::We report a simple and novel top-down method based on a drop-casting process for the controlled synthesis of all-bone-minerals biomimetic multicomponent bionanocomposites. Integration of micro- and nanoscale binary features into nanofibrous biocompatible polymer scaffold structures is successfully demonstrated. Compos...


    pub_type: 杂志文章


    authors: Biswas A,Bayer IS,Zhao H,Wang T,Watanabe F,Biris AS

    更新日期:2010-10-11 00:00:00

  • Cyclodextrin-Functionalized Fiber Yarns Spun from Deep Eutectic Cellulose Solutions for Nonspecific Hormone Capture in Aqueous Matrices.

    abstract::A wood based yarn platform for capturing pharmaceutical molecules from water was developed. Cellulose fiber yarns were modified with cyclodextrins, and the capture of 17α-ethinyl estradiol (EE2), a synthetic estrogen hormone used as contraceptive, from water was tested. The yarns were prepared by spinning a deep eutec...


    pub_type: 杂志文章


    authors: Orelma H,Virtanen T,Spoljaric S,Lehmonen J,Seppälä J,Rojas OJ,Harlin A

    更新日期:2018-02-12 00:00:00

  • AC conductivity of selectively located carbon nanotubes in poly(epsilon-caprolactone)/polylactide blend nanocomposites.

    abstract::DC and AC electrical conductivity of bionanocomposites based on the immiscible polymer blend poly(epsilon-caprolactone)/polylactide (PCL/PLA, w/w 70/30), loaded with multiwall carbon nanotubes (CNT), were studied in a wide frequency range, 10(-3) < or = f < or = 10(7) Hz from 143 to 313 K. The nanofiller concentration...


    pub_type: 杂志文章


    authors: Laredo E,Grimau M,Bello A,Wu DF,Zhang YS,Lin DP

    更新日期:2010-05-10 00:00:00

  • Biodistribution of Fracture-Targeted GSK3β Inhibitor-Loaded Micelles for Improved Fracture Healing.

    abstract::Bone fractures constitute a major cause of morbidity and mortality especially in the elderly. Complications associated with osteoporosis drugs and the age of the patient slow bone turnover and render such fractures difficult to heal. Increasing the speed of fracture repair by administration of a fracture-targeted bone...


    pub_type: 杂志文章


    authors: Low SA,Galliford CV,Yang J,Low PS,Kopeček J

    更新日期:2015-10-12 00:00:00

  • Synthesis and self-assembly of RGD-functionalized PEO-PB amphiphiles.

    abstract::Amphiphilic block copolymer self-assembly provides a versatile means to prepare nanoscale micelles in solution. The utilization of these structures as targeted drug delivery vehicles has motivated efforts to prepare bioactive ligand-functionalized polymer micelles. The impact of ligand conjugation on micelle morpholog...


    pub_type: 杂志文章


    authors: Zupancich JA,Bates FS,Hillmyer MA

    更新日期:2009-06-08 00:00:00

  • Binary Mixed Homopolymer Brushes Tethered to Cellulose Nanocrystals: A Step Towards Compatibilized Polyester Blends.

    abstract::This article reports on the successful preparation and characterization of cellulose nanocrystals (CNCs) surface-modified with polylactide (PLA) and poly(butylene succinate) (PBS) binary mixed homopolymer brushes. Their synthesis was designed as a three-step procedure combining polyester synthesis and surface-modifica...


    pub_type: 杂志文章


    authors: Mincheva R,Jasmani L,Josse T,Paint Y,Raquez JM,Gerbaux P,Eyley S,Thielemans W,Dubois P

    更新日期:2016-09-12 00:00:00

  • Electrophoretic deposition of polymer chains: a Monte Carlo study of density profile and conformation.

    abstract::Effects of molecular weight (Lc) and field strength (E) on conformation of polymer chains and their density are investigated at the surface and bulk of a driven chain system in three dimensions with a Monte Carlo simulation. As the polymer chains deposit on the surface, a linear density gradient develops in low field....


    pub_type: 杂志文章


    authors: Foo GM,Pandey RB

    更新日期:2000-10-01 00:00:00

  • Fibrillar beta-lactoglobulin gels: Part 3. Dynamic mechanical characterization of solvent-induced systems.

    abstract::Oscillatory shear rheometry has been used to study the gelation of beta-lactoglobulin at ambient in 50% v/v trifluoroethanol (TFE)/pH 7 aqueous buffer and in 50% v/v ethanol (EtOH)/water at pH 2. In contrast to what was found on heating aqueous solutions at pH 2 (Part 2 of this series), a more expected "chemical gelat...


    pub_type: 杂志文章


    authors: Gosal WS,Clark AH,Ross-Murphy SB

    更新日期:2004-11-01 00:00:00

  • Beta-casein adsorption at the silicon oxide-aqueous solution interface: calcium ion effects.

    abstract::Neutron reflectometry was used to investigate effects of calcium ions on the interfacial behavior of beta-casein at the silicon oxide-aqueous solution interface. The structural characteristics of the adsorbed layer were determined from reflectivity curves fitted to three- and two-layer optical models. The results show...


    pub_type: 杂志文章


    authors: Follows D,Holt C,Nylander T,Thomas RK,Tiberg F

    更新日期:2004-03-01 00:00:00

  • Intrinsically disordered mollusk shell prismatic protein that modulates calcium carbonate crystal growth.

    abstract::The formation of calcite prism architecture in the prismatic layer of the mollusk shell involves the participation of a number of different proteins. One protein family, Asprich, has been identified as a participant in amorphous calcium carbonate stabilization and calcite architecture in the prismatic layer of the mol...


    pub_type: 杂志文章


    authors: Ndao M,Keene E,Amos FF,Rewari G,Ponce CB,Estroff L,Evans JS

    更新日期:2010-10-11 00:00:00

  • Effect of Assembly pH on Polyelectrolyte Multilayer Surface Properties and BMP-2 Release.

    abstract::The effect of solution pH during layer-by-layer assembly of polyelectrolyte multilayer (PEM) coatings on properties relevant to orthopedic implant success was investigated. Bone morphogenetic protein 2 (BMP-2), a potent osteoconductive growth factor, was adsorbed onto the surface of anodized titanium, and PEM coatings...


    pub_type: 杂志文章


    authors: Salvi C,Lyu X,Peterson AM

    更新日期:2016-06-13 00:00:00

  • Synthesis of various glycopolymer architectures via RAFT polymerization: from block copolymers to stars.

    abstract::Well-defined linear poly(acryloyl glucosamine) (PAGA) exhibiting molar masses ranging from 3 to 120 K and low polydispersities have been prepared via reversible addition-fragmentation chain transfer polymerization (RAFT) in aqueous solution without recourse to protecting group chemistry. The livingness of the process ...


    pub_type: 杂志文章


    authors: Bernard J,Hao X,Davis TP,Barner-Kowollik C,Stenzel MH

    更新日期:2006-01-01 00:00:00

  • Covalent albumin microparticles as an adjuvant for production of mucosal vaccines against hepatitis B.

    abstract::Covalently modified albumin (BSA) microparticles were developed for potential use as an adjuvant in mucosal vaccines against hepatitis B. To synthesize consistent protein particles, a covalent approach was proposed to modify BSA. Our strategy was to bond maleic anhydride (MA) molecules to BSA structure by nucleophilic...


    pub_type: 杂志文章


    authors: Sitta DL,Guilherme MR,Garcia FP,Cellet TS,Nakamura CV,Muniz EC,Rubira AF

    更新日期:2013-09-09 00:00:00

  • Compression molding and tensile properties of thermoplastic potato starch materials.

    abstract::The mechanical and melt flow properties of two thermoplastic potato starch materials with different amylose contents were evaluated. The materials were prepared by mixing starch, glycerol, and water, mainly in the weight proportions of 10:3:4.5. Compression molding was used to produce sheets/films with a thickness in ...


    pub_type: 杂志文章


    authors: Thunwall M,Boldizar A,Rigdahl M

    更新日期:2006-03-01 00:00:00

  • Nanoscale Patterning of Surfaces via DNA Directed Spider Silk Assembly.

    abstract::Oligonucleotide-spider silk conjugates can be placed on silicon wafers by complementary DNA strands, which are coupled chemically to the surface. Such specific immobilization of spider silk proteins allows the nucleation and guided growth of β-sheet-rich nanofibrils in the presence of phosphate ions on the surface. Ad...


    pub_type: 杂志文章


    authors: Molina A,Scheibel T,Humenik M

    更新日期:2019-01-14 00:00:00

  • Pretreatment of amphiphilic comb polymer surfaces dramatically affects protein adsorption.

    abstract::New applications in regenerative biotechnology require the ability to understand and control protein-surface interactions on micrometer and submicrometer length scales. Evidence presented here shows that micropatterned amphiphilic comb polymer films exhibit a pretreatment-dependent behavior with respect to protein ads...


    pub_type: 杂志文章


    authors: Zhang Z,Ma H,Hausner DB,Chilkoti A,Beebe TP Jr

    更新日期:2005-11-01 00:00:00

  • Ultra-sub-stoichiometric "Dynamic" Bioconjugation Reduces Viscosity by Disrupting Immunoglobulin Oligomerization.

    abstract::Monoclonal antibodies (mAb) are a major focus of the pharmaceutical industry, and polyclonal immunoglobulin G (IgG) therapy is used to treat a wide variety of health conditions. As some individuals require mAb/IgG therapy their entire life, there is currently a great desire to formulate antibodies for bolus injection ...


    pub_type: 杂志文章


    authors: Gong Y,Soleymani Abyaneh H,Drossis N,Niederquell A,Kuentz M,Leroux JC,de Haan HW,Gauthier MA

    更新日期:2019-09-09 00:00:00

  • Synthesis of microbial poly(beta-hydroxybutyrate) modified with oligo(pentaerythritol ethoxylate) by Ralstonia eutropha.

    abstract::Poly(beta-hydroxybutyrate) (PHB) modified with different amounts of pentaerythritol ethoxylate (PEE) has been synthesized using Ralstonia eutropha. The growth kinetics and the synthesis of PHB in the presence of PEE were modeled using appropriate differential equations for the mass balance of the two-stage process. Th...


    pub_type: 杂志文章


    authors: Jenzsch M,Volk N,Kressler J,Scholz C

    更新日期:2001-10-01 00:00:00

  • "Tandem" Nanomedicine Approach against Osteoclastogenesis: Polysulfide Micelles Synergically Scavenge ROS and Release Rapamycin.

    abstract::We show the first example of a synergic approach of oxidant (ROS) scavenging carrier and ROS-responsive drug release in the context of a potential therapy against osteoporosis, aiming to inhibit the differentiation of inflammatory cells into osteoclasts. In our "tandem" approach, a branched amphiphilic, PEGylated poly...


    pub_type: 杂志文章


    authors: El Mohtadi F,d'Arcy R,Burke J,Rios De La Rosa JM,Gennari A,Marotta R,Francini N,Donno R,Tirelli N

    更新日期:2020-02-10 00:00:00

  • A study of water diffusion into a high-amylose starch blend: the effect of moisture content and temperature.

    abstract::The effect of moisture content and temperature on water diffusion into a modified high amylose (< or = 90%) maize thermoplastic starch blend was investigated. Gravimetric and magnetic resonance imaging (MRI) studies were conducted to elucidate the diffusion mechanism and diffusion coefficients for this system. The dif...


    pub_type: 杂志文章


    authors: Russo MA,Strounina E,Waret M,Nicholson T,Truss R,Halley PJ

    更新日期:2007-01-01 00:00:00

  • Characterization of resilin-based materials for tissue engineering applications.

    abstract::Modular proteins have emerged as powerful tools in tissue engineering because both the mechanical and biochemical properties can be precisely controlled through amino acid sequence. Resilin is an attractive candidate for use in modular proteins because it is well-known for having low stiffness, high fatigue lifetime, ...


    pub_type: 杂志文章


    authors: Renner JN,Cherry KM,Su RS,Liu JC

    更新日期:2012-11-12 00:00:00