INFLUENCE OF NUCLEATING AGENT ON THE CRYSTALLIZATION BEHAVIOR OF POLY(ETHYLENE 2,6-NAPHTHALATE)

GAO Xia; JIN Manna; Bu Haishan

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INFLUENCE OF NUCLEATING AGENT ON THE CRYSTALLIZATION BEHAVIOR OF POLY(ETHYLENE 2,6-NAPHTHALATE)

Research Article | 更新时间：2021-03-19

- INFLUENCE OF NUCLEATING AGENT ON THE CRYSTALLIZATION BEHAVIOR OF POLY(ETHYLENE 2,6-NAPHTHALATE)
- Acta Polymerica Sinica Issue 6, Pages: 717-722(2002)
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- Published：20 December 2002，
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GAO Xia, JIN Manna, Bu Haishan. INFLUENCE OF NUCLEATING AGENT ON THE CRYSTALLIZATION BEHAVIOR OF POLY(ETHYLENE 2,6-NAPHTHALATE). [J]. Acta Polymerica Sinica (6):717-722(2002)
DOI：

GAO Xia, JIN Manna, Bu Haishan. INFLUENCE OF NUCLEATING AGENT ON THE CRYSTALLIZATION BEHAVIOR OF POLY(ETHYLENE 2,6-NAPHTHALATE). [J]. Acta Polymerica Sinica (6):717-722(2002) DOI：

摘要

通过DSC、偏光显微镜 (POM)和小角激光散射 (SALS)研究了苯甲酸钠 (SB)对聚-2

6-萘二甲酸乙二酯(PEN)结晶行为的影响 .研究发现SB是PEN的成核剂 .在高温下

SB与PEN发生化学反应

生成可以起到成核作用的物质

降低了PEN的成核表面自由能位垒

提高了PEN在高温区的结晶速率 .同时

SB还可以提高PEN在低温区的结晶速率 .此外

SB的加入还使PEN分别在高温区和低温区结晶得到的多角晶和球晶尺寸减小

这表明不管在高温区还是在低温区

SB都可以提高PEN的成核速率 .而含有SB的PEN结晶样品的SALS图像变得弥散、模糊

则说明SB使PEN在低温下结晶得到的球晶变得不完善.

Abstract

The crystallization and morphology of poly(ethylene 2

6-naphthalate) (PEN) containing soium benzoate (SB) were investigated by means of differential scanning calorimetry (DSC)

polarized optical microscopy (POM) and small angle light scattering (SALS)．It was revealed that SB may act as a chemical nucleating agent of PEN．It can decrease the surface free energy barrier toward nucleation and accelerate the crystallization rate of PEN at high temperature．Meanwhile

SB can improve the mobility of PEN chain

so the crystallization rate of PEN can also be increased at low temperature．The size of hedrites and spherulites

corresponding to the crystal morphology of PEN samples crystallized at high or low temperature

respectivdy

is reduced in the presence of SB．It is indicated that the nucleation rate of PEN is enhanced by SB．Furthermore

the obtained PEN spherulites become less perfect with the addition of SB.

关键词

成核剂PEN结晶速率结晶形态

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Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology

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