Greatly accelerated crystallization of poly(lactic acid): cooperative effect of stereocomplex crystallites and polyethylene glycol
Greatly accelerated crystallization of poly(lactic acid): cooperative effect of stereocomplex crystallites and polyethylene glycol
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大大加速聚乳酸结晶:立构复合物微晶与聚乙二醇的协同作用
DOI:
10.1007/s00396-013-3067-x
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发表时间:
2013
影响因子:
2.4
通讯作者:
Ming-Bo Yang
中科院分区:
文献类型:
--
作者:
Xin-Feng Wei;Rui-Ying Bao;Zhi-Qiang Cao;Liang-Qing Zhang;Zheng-Ying Liu;Wei Yang;Bang-Hu Xie;Ming-Bo Yang
Stereocomplex crystallite (SC) between enantiomeric poly(l-lactic acid) (PLLA) and poly(d-lactic acid) (PDLA), with largely improved thermal resistance and mechanical properties compared with PLLA and PDLA, is a good nucleating agent for poly(lactic acid) (PLA). The effects of SC and/or polyethylene glycol (PEG) on the crystallization behaviors of PLA were investigated. The non-isothermal and isothermal crystallization kinetics revealed that SC and PEG can separately promote the crystallization rate of PLA by heterogeneous nucleation and increasing crystal growth rate, respectively. However, their promoting effect is limited when used alone, and the modified PLA cannot crystallize completely under a cooling rate of 20 °C/min. When SC and PEG are both present, the crystallization rate of PLA is greatly accelerated, and even under a cooling rate of 40 °C/min, PLA can crystallize completely and get a high crystallinity owing to the excellent balance between simultaneously improved nucleation and crystal growth rate.
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影响因子:
3
作者:
Zhiyuan Jia;Kunyu Zhang;Juanjuan Tan;Changyu Han;Li-song Dong;Yuming Yang
通讯作者:
Zhiyuan Jia;Kunyu Zhang;Juanjuan Tan;Changyu Han;Li-song Dong;Yuming Yang
影响因子:
2.4
作者:
Yan Zhang;Qizhi Zhang;L. Zha;Wuli Yang;Changchun Wang;Xin-guo Jiang;S. Fu
通讯作者:
Yan Zhang;Qizhi Zhang;L. Zha;Wuli Yang;Changchun Wang;Xin-guo Jiang;S. Fu
影响因子:
3.3
作者:
Na, Bing;Zou, Shufen;Yin, Qiang
通讯作者:
Yin, Qiang
影响因子:
5.5
作者:
Barrau, S.;Vanmansart, C.;Seguela, R.
通讯作者:
Seguela, R.
DOI:
10.1007/s11426-012-4753-0
发表时间:
2013-01
期刊:
Science China Chemistry
影响因子:
--
作者:
Y. Zhong;Yaqiong Zhang;Jingjing Yang;Wenlin Li;Zhigang Wang;Donghua Xu;Shou-xi Chen;Yunsheng Ding
通讯作者:
Y. Zhong;Yaqiong Zhang;Jingjing Yang;Wenlin Li;Zhigang Wang;Donghua Xu;Shou-xi Chen;Yunsheng Ding