The Study of Effects of an Amorphous Copolymer P(VA-VP) on the Crystallization Behavior of PVA

您当前的位置：

首页 >

文章列表页 >

The Study of Effects of an Amorphous Copolymer P(VA-VP) on the Crystallization Behavior of PVA

更新时间：2023-12-11

- The Study of Effects of an Amorphous Copolymer P(VA-VP) on the Crystallization Behavior of PVA
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 27, Issue 4, Pages: 63-68(1988)
- 作者机构：
  
  中山大学测试中心
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1988，
  
  Published Online：25 September 1988，
扫描看全文
The Study of Effects of an Amorphous Copolymer P(VA-VP) on the Crystallization Behavior of PVA. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 27(4):63-68(1988)
DOI：

The Study of Effects of an Amorphous Copolymer P(VA-VP) on the Crystallization Behavior of PVA. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 27(4):63-68(1988) DOI：

摘要

本文用DSC法研究了醋酸乙烯酯和乙烯基吡咯烷酮共聚物的水解物和聚乙烯醇(PVA)共混体系的热性能与结晶行为.结果表明

共混物的玻璃化转变温度和组成关系符合Fox方程.共混体系的熔点、熔融热效应、晶片层厚度和结晶度随非晶组分的增加而下降.结晶度还受结晶时间的影响

显示了处于非平衡状态下的结晶组分具有不同的结晶特性.还研究了共混物组成对半结晶时间、结晶速率常数及晶体的成核与生长形态的影响

非晶相组分的加入不影响PVA晶体的成核与Avrami指数.

Abstract

The crystallization behaviors and thermalproperties of the blends composed of poly (vinylalcohol-n-vinylpyrrolidone) (P(VA—VP)) hydrolyzed from poly (vinylacetate-n-vinylpyrrolidone) (P(VAC—VP)) and polyvinyl alcohol (PVA) have been studied by means of DSC

The relationship between the glass transition temperatures of the blends and their compositions is fitted for the Fox equation quite well

suggesting that the blends are compatible. The results show that the melting point

the enthalpy of fusion

the crystal lamella thickness and the crystallinity of PVA decrease with an increase in P(VA—VP) content in the blends

but the mechanism of nucleation and the growth of the PVA crystals do not change. The effects of the blend composition on the half time and the kinetic rate constant of crystallization also have been discussed

关键词

差示扫描量热法醋酸乙烯酯-乙烯基吡咯烷酮共聚物水解物聚乙烯醇共混物的结晶行为

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

Postal code：510275
Tel：020-84112585，84113223 Email：xuebaozr@mail.sysu.edu.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰