Chitosan/Poly(Vinyl Alcohol)/LDH Biocomposites With pH-Sensitive Properties

被引：28
|
作者：
Bercea, Maria [1 ]
Bibire, Elena-Livia [1 ,2 ]
Morariu, Simona [1 ]
Carja, Gabriela [2 ]
机构：
[1] Petru Poni Inst Macromol Chem, Iasi 700487, Romania
[2] Gh Asachi Tech Univ, Fac Chem Engn & Environm Protect, Dept Chem Engn, Iasi, Romania
来源：
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS | 2015年 / 64卷 / 12期
关键词：
Chitosan; hydrogel; LDH; pH-sensitive; poly(vinyl alcohol); swelling; viscoelasticity; INTRINSIC VISCOSITIES; INTERPOLYMER COMPLEX; POLY(VINYL ALCOHOL); POLY(ASPARTIC ACID); AQUEOUS-SOLUTIONS; BEHAVIOR; POLYMER; HYDROGEL; CHITOSAN; F127;
D O I：
10.1080/00914037.2014.996712
中图分类号：
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号：
0805 ; 080501 ; 080502 ;
摘要：
The viscometric parameters of chitosan/poly(vinyl alcohol) mixtures determined at 37 degrees C are sensitive to polymer composition and pH changes, giving information about interpolymer complexes formation. Hybrid composites based on interpolymeric chitosan/poly(vinyl alcohol) complexes and the inorganic matrix of layered double hydroxides were synthesized in the presence of glutaraldehyde. The viscoelastic parameters showed a stronger network formation at pH = 5.5 which is not broken down by the mechanical shear forces. The swelling kinetics of hybrid hydrogels is pH sensitive and the type of diffusion of small molecules into the network was established. [GRAPHICS] .
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页码：628 / 636
页数：9
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