中国科技论文在线

上传时间

2006年10月31日

【期刊论文】Synthesis, characterization, and thermal properties of biodegradable aliphatic copolyester based on q-caprolactone, adipic acid, and 1,6-hexanediol

钱志勇， CaiBing Liu a， ZhiYong Qian a， *， YingChun Gu b， LinYu Fan c， Jun Li d， GuoTao Chao a， WenJuan Jia a， MingJing Tu a

Materials Letters 60 (2006) 31-38，-0001，（）：

-1年11月30日

摘要

In this paper, biodegradable aliphatic copolyesters were synthesized from q-caprolactone, adipic acid, and 1,6-hexanediol by meltpolycondensation method. The chemical structure, and thermal properties of these copolymers were studied in detail. The water absorption behavior and hydrolytic degradation behavior of this copolyester were also studied. This aliphatic copolyester prepolymer would be used to prepare the biodegradable poly(ester urethane), which might have potential application in biomedical field.

Biodegradable copolymer， Poly(， ester urethane)，， Aliphatic polyester， Thermal property， In vitro degradation

60浏览
0点赞
0收藏
0分享
195下载
0

引用

上传时间

2006年10月31日

【期刊论文】Structure and property study of degradable polyesteramide fibres: processing and alkaline degradation behaviour

钱志勇， Zhiyong Qian， Yi He， Yaobang Zou， Sai Li， Xiaobo Liu*

Polymer Degradation and Stability 83 (2004) 127-132，-0001，（）：

-1年11月30日

摘要

Degradable polyesteramide fibres were processed by melt-spinning. Tensile properties of as-spun and hot-drawn fibres were also investigated. After drawing, the overall crystallinity and the melting temperature of the copolymer increased. As a result, the tensile strength of the fibre increased, and the elongation at break decreased. The morphology of the surface and fracture cross section were studied by SEM. During alkaline degradation, the tensile strength and the elongation at break both decreased.

Polyesteramide， Degradable polymer， Fibre， Thermal property， Tensile property

57浏览
0点赞
0收藏
0分享
182下载
0

引用

上传时间

2006年10月31日

【期刊论文】Hydrolytic degradation study of biodegradable polyesteramide copolymers based on e-caprolactone and 11-aminoundecanoic acid

钱志勇， Zhiyong Qian a， *， Sai Li b， Yi He b， Hailian Zhang b， Xiaobo Liu b

Biomaterials 25 (2004) 1975-1981，-0001，（）：

-1年11月30日

摘要

In this paper, a new kind of aliphatic biodegradable polyesteramide copolymers P

Polyesteramide， e-caprolactone， Hydrolytic degradation， Degradation mechanism

54浏览
0点赞
0收藏
0分享
155下载
0

引用

上传时间

2006年10月31日

【期刊论文】Synthesis and thermal degradation of biodegradable polyesteramide based on e-caprolactone and 11-aminoundecanoic acid

钱志勇， Zhiyong Qian， Sai Li， Yi He， Cao Li， Xiaobo Liu*

Polymer Degradation and Stability 81 (2003) 279-286，-0001，（）：

-1年11月30日

摘要

A new kind of polyesteramide copolymer based on e-caprolactone and 11-aminoundecanoic acid has been synthesized by melt polycondensation. The copolymers were characterized by FTIR, 1H-NMR, DSC, and WAXD. With the increase in aminoundecanoic acid content, the melting temperature, heat of fusion, and Td,50% increased accordingly. The thermal degradation of the P(CL/AU)x/y copolymers was studied using FTIR, and TG During thermal degradation, the ester bond decomposes at lower temperature, then the amide bond decomposes at higher temperature.

Polyesteramide， Biodegradable polymer， Crystallinity， Thermal degradation， Nylon 11

59浏览
0点赞
0收藏
0分享
152下载
0

引用

上传时间

2006年10月31日

【期刊论文】Hydrolytic degradation behavior of biodegradable polyetheresteramide-based polyurethane copolymers

钱志勇， CaiBing Liu，， YingChun Gu， ZhiYong Qian， LinYu Fan， Jun Li， GuoTao Chao， MingJing Tu， WenJuan Jia

，-0001，（）：

-1年11月30日

摘要

In this article, a new kind of biodegradable polyetheresteramide-based polyurethane (PEEA-U) copolymers were prepared by the melt polycondensation method from -caprolactone, 6-aminocaproic acid, poly(ethylene glycol), and toluene diisocyanate. The water absorption of PEEA-U was affected strongly by the reaction time and the content of chain extender; and the hydrolytic degradation behavior of the copolymers was mainly determined by the reaction time, chain extender content, and the pH value of the degradation medium. Also, DSC, 1H-NMR, and inherent viscosity were used to characterize the degradation behavior of the copolymers.

biodegradable polymer， polyetheresteramide copolymer， polyurethane， degradation

55浏览
0点赞
0收藏
0分享
130下载
0

引用