Mesophase-Mediated Crystallization of Poly(butylene-2,6-naphthalate): An Example of Ostwald's Rule of Stages

被引：50

作者：

Cavallo, Dario ^{[1
]}

Mileva, Daniela ^{[2
]}

Portale, Giuseppe ^{[3
]}

Zhang, Li ^{[4
]}

Balzano, Luigi ^{[5
]}

Alfonso, Giovanni C. ^{[4
]}

Androsch, Rene ^{[2
]}

机构：

[1] Eindhoven Univ Technol, Dept Mech Engn, NL-5600 MB Eindhoven, Netherlands

[2] Univ Halle Wittenberg, Ctr Engn Sci, D-06099 Halle, Germany

[3] Netherlands Org Sci Res NWO, DUBBLE CRG, European Synchrotron Radiat Facil, F-38043 Grenoble, France

[4] Univ Genoa, Dept Chem & Ind Chem, I-16146 Genoa, Italy

[5] DSM Ahead, Ctr Mat Sci, NL-6160 MD Geleen, Netherlands

来源：

ACS MACRO LETTERS | 2012年 / 1卷 / 08期

关键词：

THERMOTROPIC LIQUID-CRYSTALS; PHASE-BEHAVIOR; X-RAY; POLYESTERS; TRANSITION; KINETICS; ACID; UNIT; METASTABILITY; COPOLYESTERS;

D O I：

10.1021/mz300349z

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 investigation of poly(butylene-2,6-naphthalate) crystallization by means of chip-calorimetry and ultrafast wide-angle X-ray diffraction (WAXD) revealed the existence of two possible mechanisms. The formation Of the stable triclinic-alpha-phase occurs directly from the undercooled melt at law cooling rates/high crystallization temperature. At higher cooling rates a two-stage route is observed: crystallization is preceded by the formation of a mesomorphic phase from the isotropic melt The monotiopic behavior of poly(butylene-2,6-naphthalate), becoming apparent only under severe cooling conditions, obeys the well-known Ostwald's rule of stages.

引用

页码：1051 / 1055

页数：5

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