结晶度
退火(玻璃)
聚乙烯
结晶
材料科学
无定形固体
再结晶(地质)
线性低密度聚乙烯
固态
低密度聚乙烯
聚合物
Crystal(编程语言)
化学工程
复合材料
高分子化学
结晶学
化学
物理化学
古生物学
程序设计语言
工程类
生物
计算机科学
作者
P. J. Phillips,Alican Vatansever
出处
期刊:Polymer
[Elsevier]
日期:1989-04-01
卷期号:30 (4): 710-717
被引量:23
标识
DOI:10.1016/0032-3861(89)90160-2
摘要
The annealing behaviour of lightly crosslinked low-density polyethylenes having various levels of extractable non-crosslinked polyethylene present has been studied. Three separate processes can be identified, which are (a) solid-state annealing, (b) recrystallization and (c) gel-sol separation in the molten state. Unlike linear or linear low-density polyethylene, annealing for long times does not result in crystallization of all crystallizable material; there is always a component present that crystallizes only on cooling if the annealing temperature is in excess of 90°C. The multiple melting peaks observed are not associated with macroscopic morphological features but arise largely from differences in the perfection of crystals or in the character of the amorphous phase in the vicinity of the crystal.
科研通智能强力驱动
Strongly Powered by AbleSci AI