Crystallization of homopolymers confined in sherical or cylindrical nanodomains

被引：50

作者：

Nojima, Shuichi ^{[1
]}

Ohguma, Yuya ^{[1
]}

Namiki, Shingo ^{[1
]}

Ishizone, Takashi ^{[1
]}

Yamaguchi, Kazuo ^{[2
]}

机构：

[1] Tokyo Inst Technol, Grad Sch Sci & Engn, Dept Organ & Polymer Mat, Meguro Ku, Tokyo 1528552, Japan

[2] Kanagawa Univ, Dept Chem, Fac Sci, Kanagawa 2591293, Japan

来源：

MACROMOLECULES | 2008年 / 41卷 / 06期

关键词：

D O I：

10.1021/ma7027903

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The crystallization behavior of poly(δ-valerolactone) (PVL) homopolymers ([-(CH2)4-CO-O-]n spherically or cylindrically confined within PS matrices and differences in crystallization between PVL blocks and PVL homopolymers was reported. Small-Angle X-ray Scattering (SAXS)curves for V8-S21 and V8/S21 at room temperature show a few scattering peaks, and the angular positions of these peaks exactly correspond to the ratio of 1:√3:√4, indicating that the PVL cylindrical microdomain is formed in PS matrices. The melting temperature and heat of fusion of PVL chains show that the PVL homopolymer has a higher crystallizability than the PVL block in the same nanodomain. Isothermal crystallization of PVL blocks and PVL homopolymers by differential scanning calorimetry (DSC) show a steep increase at early stage crystallization followed by an asymptotic increase at late stage.

引用

页码：1915 / 1918

页数：4

共 30 条

[1]

Arnal ML, 1998, MACROMOL CHEM PHYS, V199, P2275, DOI 10.1002/(SICI)1521-3935(19981001)199:10<2275::AID-MACP2275>3.0.CO

[2]

2-#

[3] Microphase separation vs crystallization in polystyrene-b-polybutadiene-b-poly(ε-caprolactone) ABC triblock copolymers [J].