Abstract:
:Two organosolv lignins from different origins, namely, almond shells and maritime pine, were modified by using a nanoclay and nanosilicate. Prior to modification, they were activated via glyoxalation to enhance the reactivity of the lignins and thus ease the introduction of the nanoparticles into their structure. The lignins were characterized by several techniques (Fourier transformed infrared, high-performance size exclusion chromatography, 1H NMR, X-ray diffraction, and thermogravimetric analysis) before and after modification to elucidate the main chemical and structural changes. The reaction with glyoxal proved to increase the amount of hydroxyl groups and methylene bridges. This tendency was more pronounced, as the percentage of glyoxal was incremented. On the other side, the addition of the nanoclay and nanosilicate particles improved the thermal stability of the lignins compared to that of the original unmodified ones. This trend was more evident for the lignin derived from maritime pine, which displayed better results regarding the thermal stability, indicating a more effective combination of the nanoparticles in the lignin structure during the modification process.
journal_name
Biomacromoleculesjournal_title
Biomacromoleculesauthors
de Hoyos-Martínez PL,Robles E,Khoukh A,Charrier-El Bouhtoury F,Labidi Jdoi
10.1021/acs.biomac.9b00799subject
Has Abstractpub_date
2019-09-09 00:00:00pages
3535-3546issue
9eissn
1525-7797issn
1526-4602journal_volume
20pub_type
杂志文章abstract::In this paper we extend our previous experimental work on interaction between polyelectrolytes and liposomes. First, the adsorption of chitosan and alkylated chitosan (cationic polyelectrolytes) with different alkyl chain lengths on lipid membranes of liposomes is examined. The amount of both chitosans adsorbed remain...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm800400y
更新日期:2008-08-01 00:00:00
abstract::The pressure and temperature dependence of the cloud point transition of an aqueous solution of an elastin-like polypeptide (MGLDGSMG(VPGIG)40VPLE), prepared by bacterial expression of the corresponding artificial gene, was measured. A temperature-pressure diagram was constructed over a wide range of conditions. The (...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm005606u
更新日期:2000-01-01 00:00:00
abstract::An efficient process for the synthesis of degradable hydrogels containing octa-betaine ester polyhedral oligomeric silsesquioxane (POSS) through efficient thiol-ene and Menschutkin click reactions was developed. The hydrogels exhibited a yield strength of 0.36 MPa and a compressive modulus of 4.38 MPa and displayed ex...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.0c00530
更新日期:2020-09-14 00:00:00
abstract::A novel pH and temperature sensitive block copolymer was prepared by adding pH sensitive moiety to temperature sensitive block copolymer. This block copolymer solution showed a reversible sol-gel transition by a small pH change in the range of pH 7.4-8.0 and also by the temperature change in the region of body tempera...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm050521k
更新日期:2005-11-01 00:00:00
abstract::Poly(3-(tert-butoxycarbonyl)-N-vinyl-2-pyrrolidone) has been synthesized and characterized by gel permeation chromatography, Fourier transform infrared spectroscopy, NMR spectroscopy, and thermal analysis. The polymer is a chemically amplified photoresist. Arrays of lines with 25 microm width and 25 microm spacing wer...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm0256505
更新日期:2003-01-01 00:00:00
abstract::Self-assembling amphiphilic designer peptides have been successfully applied as nanomaterials in biomedical applications. Understanding molecular interactions at the peptide-membrane interface is crucial, since interactions at this site often determine (in)compatibility. The present study aims to elucidate how model m...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.6b01089
更新日期:2016-11-14 00:00:00
abstract::The hierarchical self-assembly of cellulose nanocrystals (CNCs) is an important phenomenon occurring naturally in plant cell walls. Utilization of this assembly for advanced applications requires a fundamental theoretical understanding of interactions between the CNCs, which is still incomplete. Hence, in this work, w...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.0c00469
更新日期:2020-08-10 00:00:00
abstract::Specific folate receptors are abundantly overexpressed in chronically activated macrophages and in most cancer cells. Directed folate receptor targeting using liposomes is usually achieved using folate linked to a phospholipid or cholesterol anchor. This link is formed using a large spacer like polyethylene glycol. He...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.5b00823
更新日期:2015-09-14 00:00:00
abstract::Electrospinning is a versatile process used to prepare micro- and nano- sized fibers from various polymers dissolved in volatile solvents. In this report, cellulose and cellulose-heparin composite fibers are prepared from nonvolatile room temperature ionic liquid (RTIL) solvents by electrospinning. RTILs are extracted...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm050837s
更新日期:2006-02-01 00:00:00
abstract::New aspects concerning the mechanism of formation of chitosan physical hydrogels without any cross-linking agent were studied. The gelation took place during the evaporation of a hydroalcoholic solution of chitosan. We first demonstrated that it was possible to form a physical hydrogel from a hydrochloride form of chi...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm050653d
更新日期:2005-11-01 00:00:00
abstract::First generation, photocrosslinkable dendrimers consisting of natural metabolites (i.e., succinic acid, glycerol, and beta-alanine) and nonimmunogenic poly(ethylene glycol) (PEG) were synthesized divergently in high yields using ester and carbamate forming reactions. Aqueous solutions of these dendrimers were photocro...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm800658x
更新日期:2008-10-01 00:00:00
abstract::Inflammation plays an important role in symptomatic intervertebral disc degeneration and is associated with the production of neurotrophins in sensitizing innervation into the disc. The use of high molecular weight (HMw) hyaluronic acid (HA) hydrogels offers a potential therapeutic biomaterial for nucleus pulposus (NP...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.5b00168
更新日期:2015-06-08 00:00:00
abstract::For efficient reversal of multidrug resistance (MDR) in chemotherapy for breast cancer, multifunctional self-assembled nanoparticles (MSN) based on a new amphiphilic copolymer consisting of bioreducible poly[bis(2-hydroxylethyl)-disulfide-diacrylate-β-tetraethylenepentamine] and polycaprolactone (PBD-PCL) were constru...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm400378x
更新日期:2013-07-08 00:00:00
abstract::Despite recent advances in tumor treatment through cancer immunotherapy, the efficacy of this approach remains to be improved. Looking forward to high rates of objective clinical response, cancer immunotherapy combined with chemotherapy has gained increasing attention recently. Here, we constructed liposomes with matr...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.8b01510
更新日期:2019-02-11 00:00:00
abstract::A one-pot synthetic methodology for fabricating stimuli-responsive hemicellulose-based hydrogels was developed that consists of the in situ formation of magnetic iron oxide (Fe3O4) nanoparticles during the covalent cross-linking of O-acetyl-galactoglucomannan (AcGGM). The Fe3O4 nanoparticle content controlled the ther...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.5b00801
更新日期:2015-08-10 00:00:00
abstract::A library-orientated approach is used to gain understanding of the interactions of well-defined nanoparticles with primary human endothelial cells, which are a key component of the vasculature. Fifteen sequentially modified gold nanoparticles (AuNPs) based on three different core sizes (18, 35, 65 nm) and five polymer...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm300248u
更新日期:2012-05-14 00:00:00
abstract::The synthesis of poly(methyl methacrylate-co-methacryloxysuccinimide-graft-poly(ethylene glycol)) (PMMA-co-PMASI-g-PEG) via living free radical polymerization provides a convenient route to well-defined amphiphilic graft copolymers having a controllable number of reactive functional groups, variable length PEG grafts,...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm700541e
更新日期:2007-10-01 00:00:00
abstract::Protein-based polymers are increasingly being used in biomaterial applications because of their ease of customization and potential monodispersity. These advantages make protein polymers excellent candidates for bioanalytical applications. Here we describe improved methods for producing drag-tags for free-solution con...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm200358r
更新日期:2011-06-13 00:00:00
abstract::Despite the good clinical efficacy of interferon-alpha (IFNα) to treat some types of cancer and viral infections, this biological drug is underused given its severe adverse effects and high dosing parenteral regimens. Aiming to achieve a breakthrough in therapy with IFNα, this work reports for the first time on the de...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.7b00959
更新日期:2017-10-09 00:00:00
abstract::Recent years have seen rapid growth in utilizing vegetable oils to derive a wide variety of polymers to replace petroleum-based polymers for minimizing environmental impact. Nonedible castor oil (CO) can be extracted from castor plants that grow easily, even in an arid land. CO is a promising source for developing sev...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.0c01291
更新日期:2020-12-14 00:00:00
abstract::Degradation of fibrillar collagen is critical for tissue maintenance. Yet, understanding collagen catabolism has been challenging partly due to a lack of atomistic picture for its load-dependent conformational dynamics, as both mechanical load and local unfolding of collagen affect its cleavage by matrix metalloprotei...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm500641f
更新日期:2014-08-11 00:00:00
abstract::Enzymatic adsorption and degradation of three types of aliphatic polyester films and two types of polyolefin films by the extracellular PHB depolymerase from Alcaligenes faecalis T1 have been studied by using a quartz crystal microbalance (QCM) technique. Hydrolysis of poly[(R)-3-hydroxybutyrate] was quantitatively fo...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm0000844
更新日期:2001-04-01 00:00:00
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...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm400859z
更新日期:2013-09-09 00:00:00
abstract::Bacterial biofilms tolerate extreme levels of antibiotics. Treatment of biofilm infections therefore requires the development of new or modified antimicrobials that can penetrate biofilms and are effective against dormant persistent cells. One such new approach uses the biodegradable biopolymer chitosan and its deriva...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.8b00718
更新日期:2018-09-10 00:00:00
abstract::The influence of 2,2,6,6-tetrametylpiperidine-1-oxyl (TEMPO)-mediated oxidation of wood cellulose and the mechanical disintegration of oxidized cellulose in water on degree of polymerization determined by viscosity measurement (DP(v)) and the apparent length of the TEMPO-oxidized cellulose nanofibrils (TOCNs) was inve...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm2017542
更新日期:2012-03-12 00:00:00
abstract::A scanning laser system has been used to generate three-dimensional trimethylolpropane trimethacrylate (TRIM) cross-linked poly(2-hydroxylethyl methacrylate) polymer microstructures through azo-bis(isobutyro)nitrile (AIBN) photopolymerization using a 20 x 0.5 NA microscope objective and 365 nm laser excitation. Macrop...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm0506952
更新日期:2006-03-01 00:00:00
abstract::Reductively degradable biopolymers have emerged as a unique class of smart biomedical materials. Here, a functional coupling agent, cystamine diisocyanate (CDI), was designed to offer a facile access to reductively degradable biopolymers via polycondensation with various diols. CDI was readily obtained with a decent y...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.5b01578
更新日期:2016-03-14 00:00:00
abstract::Polyamines are essential molecules supporting the structure, conformation, and function of nucleic acids and proteins. We studied stereoisomers of alpha,alpha'-dimethylated spermine [(R,R)-Me(2)Spm, (S,S)-Me(2)Spm, (R,S)-Me(2)Spm] for their ability to provoke DNA condensation and protect DNA from damage. (R,R)- and (R...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm900958c
更新日期:2010-01-11 00:00:00
abstract::The application of nanoparticles comprising amphiphilic block copolymers for the delivery of drugs is a subject of great interest as they hold promise for more effective and selective therapies. In order to achieve this ambition, it is of critical importance to develop our understanding of the self-assembly mechanisms...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.0c00169
更新日期:2020-06-08 00:00:00
abstract::Elastin-like peptides (ELPs) have been used widely to confer thermoresponsive characteristics onto various materials, but to this point mostly linear ELPs have been studied. A class of linear and dendritic (branched) ELPs based on the GLPGL pentamer repeat unit was synthesized using an on-resin divergent strategy. The...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.5b01371
更新日期:2016-01-11 00:00:00