Chemical surface modification of poly(ethylene terephthalate) fibers by aminolysis and grafting of carbohydrates

被引:127
作者
Bech, Loic
Meylheuc, Thierry
Lepoittevin, Benedicte
Roger, Philippe
机构
[1] Univ Paris 11, Lab Chim Organ Multifonct, Equipe Glycochim Mol & Macromol, UMR 8182,CNRS,Inst Chim Mol & Mat Orsay, F-91405 Orsay, France
[2] Bioadhes & Hyg Mat UBHM, INRA, UMR 763, F-91744 Massy, France
关键词
aminolysis of PET; biomaterials; polyesters; polysaccharides; reductive amination; sugar-containing polymer; surfaces; surface modification; PHASE PEPTIDE-SYNTHESIS; MEMBRANES; SUGAR; POLYMER; ACID; PET; OLIGOSACCHARIDES; IMMOBILIZATION; DERIVATIVES; PARTICLES;
D O I
10.1002/pola.21983
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
PET is a semicrystalline thermoplastic polyester used in many fields. For a variety of applications, however, it is necessary to impart desired properties by introducing specific functional groups on the surface. Aminolysis of PET fibers with diamines (1,2-diaminoethane, 1,6-diaminohexane, 3,6-dioxa-1,8-diaminooctane, and 4,9-dioxa-1,12-diaminododecane) gives amino functional groups on the surface. The effects of temperature, reaction time, diamine concentration, and solvent employed for the grafting were studied. The graft yield was observed to increase with temperature, reaction time, and diamine concentration. Aminolysis affects greatly the geometry and surface morphology of PET fibers as observed by scanning electronic microscopy and atomic force microscopy in tapping mode. A decrease of fibers diameter and an increase of surface heterogeneity and roughness due to chemical degradation is observed. Amino groups on the surface were used to prepare glycosylated fibers by reductive amination or amidation with different carbohydrates as maltose, maltotriose, and maltohexaose. The study reveals that the yield is dependent on the initial amino groups' surface concentration and the molar mass of the carbohydrate. These surfaces could benefit to a wide range of applications in the biomedical field. (C) 2007 Wiley Periodicals, Inc.
引用
收藏
页码:2172 / 2183
页数:12
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