Melting Behavior of Epitaxially Crystallized Polycarprolactone on a Highly Oriented Polyethylene Thin Film Investigated by in Situ Synchrotron SAXS and Polarized Infrared Spectroscopy

被引：21

作者：

Duan, Yongxin ^{[1
]}

Zhang, Jianming ^{[1
]}

Chang, Haibo

Yan, Shouke ^{[2
]}

Yang, Chunming ^{[3
,4
]}

Takahashi, Isao ^{[3
,4
]}

Ozaki, Yukihiro ^{[3
,4
]}

机构：

[1] Qingdao Univ Sci & Technol, Key Lab Rubber Plast, Minist Educ, Qingdao 266042, Shandong, Peoples R China

[2] Beijing Univ Chem & Engineer, State Key Lab Chem Resource Engn, Beijing 100080, Peoples R China

[3] Kwansei Gakuin Univ, Sch Sci & Technol, Gakuen, Sanda 6691337, Japan

[4] Kwansei Gakuin Univ, Res Ctr Environm Friendly Polymers, Gakuen, Sanda 6691337, Japan

来源：

MACROMOLECULES | 2010年 / 43卷 / 12期

关键词：

X-RAY-SCATTERING; SMALL-ANGLE SCATTERING; POLYMER CRYSTALLIZATION; PHASE-TRANSITIONS; SURFACE; MORPHOLOGY; BLENDS;

D O I：

10.1021/ma100228r

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Melting behavior of epitaxially crystallized polycarprolactone (PCL) on a highly oriented polyethylene (PE) substrate was investigated by synchrotron small-angle X-ray scattering (SAXS) and Fourier transform infrared spectroscopy (FTIR). It is found that two dominant crystal thicknesses are clearly identified in the final melting stage around the melting point. In contrast to the normal melting process of polymers, the original PCL crystal and the melt-reorganized one with various lamellar thicknesses are molten and diminished simultaneously. During the melting process, orientations of the residual crystal and ordered all-trans PCL chain are found to be kept. However, the average chain orientation relaxation in the amorphous region is synchronously decreased with the evolution of melting process. A sliding diffusion mechanism was used to explain the melt behavior of PCL on the highly oriented PE substrate.

引用

页码：5315 / 5322

页数：8

共 42 条

[1] CRYSTAL STRUCTURE OF POLY-ETA-CAPROLACTONE [J].