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

被引：49
|
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
收藏
页码：1051 / 1055
页数：5
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