Thermal strain-induced cold crystallization of amorphous poly(lactic acid)

doi:10.1039/c6ce00464d

IHEP OpenIR > 多学科研究中心

	Thermal strain-induced cold crystallization of amorphous poly(lactic acid)
	Zhou, CB; Li, HF; Zhang, WY; Li, JQ; Huang, SY; Meng, YF; Christiansen, JD; Yu, DH; Wu, ZH; Jiang, SC; Wu ZH(吴忠华)
	2016
发表期刊	CRYSTENGCOMM (IF:3.474[JCR-2016],3.448[5-Year])
ISSN	1466-8033
卷号	18 期号:18 页码:3237-3246
文章类型	Article
摘要	The cold crystallization behaviors and structure evolutions of amorphous PLA stretched within a high-temperature range (100-150 degrees C) were investigated via in situ synchrotron WAXS and SAXS measurements. The PLA stretched at 120 degrees C exhibits excellent mechanical properties with the highest modulus, stretching strength and moderate elongation, which is attributed to the coordination effect of thermally-induced initial crystallinity and moderate chain segment mobility. The WAXS results showed that the diffraction peaks of (200/110) and (203) planes shift to higher 2 theta values, which indicates the formation of more ordered alpha' and a forms during PLA stretching within 100-150 degrees C. More a forms can be formed from the stretched a' form and/or from the amorphous phase at 100 degrees C. The phase diagram of a and a' forms in stretched PLA with stretching temperature was proposed according to the obtained data of lattice spacing. The crystallinity of stretched PLA increases faster than that which underwent quiescent cold crystallization at the same temperature. The SAXS results indicated that the long period and lamellar thickness along and vertical to the stretching direction of PLA stretched within 100-150 degrees C exhibit distinct variations, which is attributed to the difference of strain-induced crystallization and lamellar orientation.
DOI	10.1039/c6ce00464d
收录类别	SCI ; ADS
语种	英语
WOS记录号	WOS:000375688800011
ADS Bibcode	2016CEG....18.3237Z
ADS URL	https://ui.adsabs.harvard.edu/abs/2016CEG....18.3237Z
ADS引文	https://ui.adsabs.harvard.edu/abs/2016CEG....18.3237Z/citations
引用统计	正在获取... 被引频次：0 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/248029
专题	多学科研究中心
推荐引用方式 GB/T 7714	Zhou, CB,Li, HF,Zhang, WY,et al. Thermal strain-induced cold crystallization of amorphous poly(lactic acid)[J]. CRYSTENGCOMM,2016,18(18):3237-3246.
APA	Zhou, CB.,Li, HF.,Zhang, WY.,Li, JQ.,Huang, SY.,...&吴忠华.(2016).Thermal strain-induced cold crystallization of amorphous poly(lactic acid).CRYSTENGCOMM,18(18),3237-3246.
MLA	Zhou, CB,et al."Thermal strain-induced cold crystallization of amorphous poly(lactic acid)".CRYSTENGCOMM 18.18(2016):3237-3246.