Abstract:
:Cross-linked homopolymers and copolymers of 2-hydroxyethyl methacrylate, HEMA, and ethylene glycol methacrylate phosphate, MOEP, have been synthesized, and the diffusion of water into these systems has been investigated. Only polymers with 0-20 mol % MOEP exhibited ideal swelling behavior as extensive fracturing occurred in the systems with greater than 20 mol % MOEP as the polymers began to swell during water sorption. Gravimetric studies were used in conjunction with magnetic resonance imaging of the diffusion front to elucidate the diffusion mechanism for these systems. In the case of the cross-linked HEMA homopolymer gels, the water transport mechanism was determined to be concentration-independent Fickian diffusion. However, as the fraction of MOEP in the network increased, the transport mechanism became increasingly exponentially concentration-dependent but remained Fickian until the polymer consisted of 30 mol % MOEP where the water transport could no longer been described by Fickian diffusion.
journal_name
Biomacromoleculesjournal_title
Biomacromoleculesauthors
George KA,Wentrup-Byrne E,Hill DJ,Whittaker AKdoi
10.1021/bm034477pkeywords:
subject
Has Abstractpub_date
2004-07-01 00:00:00pages
1194-9issue
4eissn
1525-7797issn
1526-4602journal_volume
5pub_type
杂志文章abstract::Poloxamer thermoresponsive gels are widely explored in controlled drug delivery. Nevertheless, these gels possess inadequate mechanical properties, poor bioadhesiveness, and high permeability to water. To overcome these issues, we blended mucoadhesive hyaluronic acid (HA) with poloxamer analogs. This study aimed to in...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm1008958
更新日期:2011-01-10 00:00:00
abstract::Bovine serum albumin (BSA) and poly(diallyldimethylammonium chloride) (PDADMAC) spontaneously form, over a range of ionic strength I and pH, dense fluids rich in both macroions. To study their nanostructure, these coacervates were prepared at low I and high pH (strong interaction) or at high I and lower pH (weaker int...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm049174p
更新日期:2005-05-01 00:00:00
abstract::Lignin is a natural, renewable biopolymer synthesized by plants. It is a macromolecule consisting of aromatic structures with high density of functional groups making it an ideal precursor for the design of sustainable biomaterials for applications such as drug delivery. The rational design of these materials requires...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.7b00822
更新日期:2017-08-14 00:00:00
abstract::Gelatin microspheres are well-known for their capacity to release growth factors in a controlled manner, but gelatin microspheres do not calcify in the absence of so-called bioactive substances that induce deposition of calcium phosphate (CaP) bone mineral. This study has investigated if CaP nanocrystals can be incorp...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm1006344
更新日期:2010-10-11 00:00:00
abstract::Phase separation mechanisms and kinetics were studied using small-angle light scattering in a gelatin/maltodextrin system where phase separation could be studied in both liquid and gelled states. Nucleation and growth or spinodal decomposition occurred, depending on the quench depth. The transition between the two mec...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm025501m
更新日期:2002-07-01 00:00:00
abstract::Micellar peroxidase-catalyzed synthesis of chiral polyaniline (PANI) in the presence of dodecylbenzenesulfonic acid (DBSA) was developed. The effect of DBSA concentration on the catalytic efficiency of horseradish and palm tree peroxidases was examined. Favorable conditions for the enzymatic synthesis of chiral PANI, ...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm070212p
更新日期:2007-08-01 00:00:00
abstract::Sjögren's syndrome (SS) is an autoimmune disease associated with severe exocrinopathy, which is characterized by profound lymphocytic infiltration (dacryoadenitis) and loss of function of the tear-producing lacrimal glands (LGs). Systemic administration of Rapamycin (Rapa) significantly reduces LG inflammation in the ...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.0c01468
更新日期:2020-12-27 00:00:00
abstract::Strong signaling cascades derived from upregulation and overexpression of growth factors such as the EGF-family (epidermal growth factors) have been crucially related to cancer pathogenesis. Gene silencing techniques to modulate the expression of oncogenes and tumor suppresor genes are a strategy that shows great prom...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.8b01066
更新日期:2018-10-08 00:00:00
abstract::There is a lack of hydrogel materials whose properties can be tuned at the point of use. Biological hydrogels, such as collagen, gelate at physiological temperatures; however, they are not always ideal as scaffolds because of their low mechanical strength. Their mechanics can be improved through cross-linking and chem...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.5b01251
更新日期:2016-03-14 00:00:00
abstract::This paper describes the synthesis and characterization of a novel organic polymer coating for the prevention of the growth of Pseudomonas aeruginosa on the solid surface of three-dimensional objects. Substrata were encapsulated with polyterpenol thin films prepared from terpinen-4-ol using radio frequency plasma enha...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm100369n
更新日期:2010-08-09 00:00:00
abstract::Core-shell structured nanoparticles (NPs) render the simultaneous coloading capacity of both hydrophobic and hydrophilic drugs and may eventually enhance therapeutic efficacy. In this study, we employed a facile squalenoylation technology to synthesize a new amphiphilic starch derivative from partially oxidized starch...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.0c01430
更新日期:2020-12-21 00:00:00
abstract::Polyrotaxanes, a family of rod-shaped nanomaterials comprised of noncovalent polymer/macrocycle assemblies, are being used in a growing number of materials and biomedical applications. Their physiochemical properties can vary widely as a function of composition, potentially leading to different in vivo performance out...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.6b00508
更新日期:2016-09-12 00:00:00
abstract::Binding human serum albumin (HSA) of three polyoxometalates (POMs) with the Wells-Dawson structure, alpha(2)-[P2W17O61]10- (abbreviated as alpha(2)-P2W17) and two of its metal-substituted derivatives, alpha(2)-[NiP2W17O61]8- and alpha(2)-[CuP2W17O61]8- (alpha(2)-P2W17Ni and alpha(2)-P2W17Cu, respectively) was studied ...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm701120j
更新日期:2008-03-01 00:00:00
abstract::Silk fibroin hydrogels with tunable properties could be obtained from aqueous fibroin solutions (4.2 w/v %) in a short period of time. This was achieved by the addition of ethylene glycol diglycidyl ether (EGDE) into the reaction solution. Introduction of EGDE cross-links between the fibroin molecules decreases the mo...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm300006r
更新日期:2012-04-09 00:00:00
abstract::In situ polymerizable hydrogels are extensively investigated to implement new biomedical and pharmaceutical approaches. In the present paper a novel polysaccharidic matrix based on calcium alginate (Ca(II)-Alg) hydrogel and dextran methacrylate derivative (Dex-MA), showing potential applicability in the field of pharm...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm800252c
更新日期:2008-07-01 00:00:00
abstract::A series of copolymers of trimethylene carbonate (TMC) and L-lactide (LLA) were synthesized and evaluated as scaffolds for the production of artificial blood vessels. The polymers were end-functionalized with acrylate, cast into films, and cross-linked using UV light. The mechanical, degradation, and biocompatibility ...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm201291e
更新日期:2011-11-14 00:00:00
abstract::Vaginal films featuring the pH-dependent release of tenofovir (TFV) were developed for the prevention of sexual transmission of human immunodeficiency syndrome (HIV). Films based on hydroxypropyl methylcellulose and zein were prepared incorporating different plasticizers [oleic acid, lactic acid, glycerol, and polyeth...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.0c01609
更新日期:2021-01-06 00:00:00
abstract::Agmatine-containing bioreducible polymer, poly(cystaminebis(acrylamide)-agmatine) (poly(CBA-AG)) was synthesized for gene delivery systems. It could form 200-300 nm sized and positively charged polyplexes with pDNA, which could release pDNA in reducing the environment due to the internal disulfide bonds cleavage. Poly...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.5b00590
更新日期:2015-09-14 00:00:00
abstract::Selectively spooling single plasmid DNA (pDNA), as a giant polyelectrolyte, into a nanosized toroidal structure or folding it into a rod-like structure has been accomplished by polyion complexation with block catiomers to form polymeric micelles in varying NaCl concentrations. The interactive potency between the pDNA ...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.5b00491
更新日期:2015-09-14 00:00:00
abstract::It is demonstrated that the molecular solubility of softwood hemicelluloses is significantly influenced by pretreatment of the fibers, extraction, and downstream processing. To quantify these effects, four hemicellulose samples were extracted from different thermomechanical pulps of Norway spruce. The molecular solubi...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.8b00088
更新日期:2018-04-09 00:00:00
abstract::Biocompatible photoresponsive materials are of interest for targeted drug delivery, tissue engineering, 2D and 3D protein patterning, and other biomedical applications. We prepared light degradable hydrogels using a natural alginate polysaccharide cross-linked with iron(III) cations. The "hard" iron(III) cations used ...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm300707a
更新日期:2012-08-13 00:00:00
abstract::Vascular grafts that can support total replacement and maintenance by the body of the injured vessel would improve outcomes of major surgical reconstructions. Building scaffolds using components of the native vessel can encourage biological recognition by native cells as well as mimic mechanical characteristics of the...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.7b01165
更新日期:2017-11-13 00:00:00
abstract::The new combinations of monomers presented in this work were evaluated in order to create an elastic material for potential application in soft tissue engineering. Thermoplastic elastomers (TPE) of trimethylene carbonate (TMC) with L-lactide (LLA) and 1,5-dioxepan-2-one (DXO) have been synthesized using a cyclic five-...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm060081c
更新日期:2006-05-01 00:00:00
abstract::The dynamics of silk protein in the presence and absence of water has been investigated by dielectric relaxation spectroscopy (DRS). The silk fibroin film cast from its water solution contains 4-7 wt % bound water molecules, which can be removed by dehydration at 165 °C. Temperature and frequency scans were performed ...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm1008316
更新日期:2010-10-11 00:00:00
abstract::Given the significance of hydrogels as cell-instructive materials, it is important to understand how differences in their chemical and physical properties are able to direct cell fate. For example, it remains unclear how different hydrogel cross-linking chemistries and gelation mechanisms influence cell behavior. Here...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.6b01740
更新日期:2017-03-13 00:00:00
abstract::A strategy to manipulate the disulfide bond breaking triggered unfolding, and subsequently assembly of human serum albumin (HSA) in a lipophilic drug-dependent manner is present. In this study, the hydrophobic region, a molecular switch of the HSA, was regulated to form HSA-paclitaxel (HSA-PTX) nanoparticles by a faci...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm201401s
更新日期:2012-01-09 00:00:00
abstract::We present an efficient approach to develop cellulose nanocrystal (CNC) hybrids with magnetically responsive Fe3O4 nanoparticles that were synthesized using the (Fe3+/Fe2+) coprecipitation. After 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-catalyzed oxidation of CNC, carbodiimide (EDC/NHS) was used for coupli...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/acs.biomac.6b01778
更新日期:2017-03-13 00:00:00
abstract::Atomic force microscopy (AFM) was used to assess a new chimeric protein consisting of a fusion protein of the consensus repeat for Nephila clavipes spider dragline protein and bone sialoprotein (6mer+BSP). The elastic modulus of this protein in film form was assessed through force curves, and film surface roughness wa...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm2000605
更新日期:2011-05-09 00:00:00
abstract::Combining molecular weight distribution (MWD) data for linear chains of debranched starch from capillary electrophoresis and from size exclusion chromatography (SEC) with detection by differential refractive index and by multi-angle laser light scattering has enabled Mark-Houwink parameters to be determined for linear...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm050041t
更新日期:2005-07-01 00:00:00
abstract::N-(3-Aminopropyl)pyrrole was covalently coupled with alginate in an aqueous-phase reaction by means of carbodiimide-mediated activation chemistry to provide a pyrrole-alginate conjugate for subsequent use in biosensor applications. The pyrrole-alginate conjugate was quantified by UV spectroscopy at 230 nm, by an HPSEC...
journal_title:Biomacromolecules
pub_type: 杂志文章
doi:10.1021/bm050339j
更新日期:2005-11-01 00:00:00