剪切速率对等规聚丙烯的结晶和形貌的影响

doi:10.7503/cjcu20150675

高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (2): 367.doi: 10.7503/cjcu20150675

剪切速率对等规聚丙烯的结晶和形貌的影响

唐毓婧^1,², 门永锋¹()

1. 中国科学院长春应用化学研究所, 高分子物理与化学国家重点实验室, 长春 130022
2. 中国石油化工股份有限公司北京化工研究院, 北京 100013

收稿日期:2015-08-27 出版日期:2016-02-10 发布日期:2016-01-07
作者简介:联系人简介: 门永锋, 男, 博士, 研究员, 主要从事高分子物理研究. E-mail:men@ciac.ac.cn
基金资助:
国家自然科学基金(批准号: 21134006)资助

Influence of Shear on i-Polypropylene Crystallization and Morphology^†

TANG Yujing^1,², MEN Yongfeng^1,^*()

1. State Key laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, China
2. SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China

Received:2015-08-27 Online:2016-02-10 Published:2016-01-07
Contact: MEN Yongfeng E-mail:men@ciac.ac.cn
Supported by:
† Supported by the National Natural Science Foundation of China(No.21134006)

摘要/Abstract

摘要：

利用同步辐射小角X射线散射、广角X射线衍射和差示扫描量热法研究了不同剪切速率下等规聚丙烯的结晶结构. 结果表明, 施加剪切会导致β晶生成, 但基本不改变样品总结晶度. β晶含量随着剪切速率的提高先升高后降低, 与α晶具有竞争关系. 当剪切速率在10~32 s^-1之间时, α晶和β晶共存, 并存在分属于两种晶型的两组长周期, 其中较大的长周期属于β晶.

关键词: 等规聚丙烯, 剪切速率, 同步辐射小角X射线散射

Abstract:

The shear-induced crystallization behavior of isotactic polypropylene(iPP) was investigated by synchrotron small angle X-ray scattering, wide angle X-ray diffraction and differential scanning calorimetry. The results showed that the β-crystallinity were found after shearing and the total crystallnity kept almost constant. The β-crystallinity increased with the shear rate up to 10 s^-1and then decreased at higher shear rates indicating the existence of competing processes of developing α- and β-crystallinities. At the shear rates between 10 s^-1 and 32 s^-1, two populations of long spacing were observed with the larger one attributed to the β-crystallinity.

Key words: Isotactic polypropylene, Shear tate, Synchrotron small angle X-ray scattering

中图分类号:

O631

TrendMD:

唐毓婧, 门永锋. 剪切速率对等规聚丙烯的结晶和形貌的影响. 高等学校化学学报, 2016, 37(2): 367.

TANG Yujing, MEN Yongfeng. Influence of Shear on i-Polypropylene Crystallization and Morphology^†. Chem. J. Chinese Universities, 2016, 37(2): 367.

图/表 12

Scheme 1 Schematic representation of the shear and temperature conditions for sample preparation

Fig.1 Room temperature WAXD patterns of iPP samples crystallized at 130 ℃ after being sheared under different rates indicated on the patterns Shear rate/s-1: (A) 0; (B) 2; (C) 5; (D) 10; (E) 16; (F) 32.

Fig.2 Integrated WAXD intensity profiles of iPP samples crystallized at 130 ℃ after being sheared under different rates indicated on the graph Curves shifted vertically for sake of clarity. Shear rate/s-1: a. 0; b. 2; c. 5; d. 10; e. 16; f. 32.

Fig.3 Crystallinity of α-crystal(a), β-crystal(b) and total crystallinity(c) as a function of shear rate

Fig.4 DSC melting curves of iPP samples crystallized at 130 ℃ after being sheared under different rates indicated on the graph Heat rate: 10 K/min. Curves shifted vertically for the sake of clarify. Shear rate/s-1: a. 0; b. 2; c. 5; d. 10; e. 16; f. 32.

Fig.5 Room temperature SAXS patterns of iPP samples crystallized at 130 ℃ after being sheared under different rates indicated on the patterns Shear rate/s-1: (A) 0; (B) 2; (C) 5; (D) 10; (E) 16; (F) 32.

Fig.6 SAXS intensity distribution of iPP samples crystallized at 130 ℃ after being sheared under different rates indicated on the graph along the orientation direction(A) and the corresponding long spacing(B) Shear rate/s-1: a. 0; b. 2; c. 5; d. 10; e. 16; f. 32.

Fig.7 DSC curves for iPP subjected to different shear rates Heating to a temperature where β-crystals were completely molten at a heat rate of 10 K/min, and then cooling down to 30 ℃ at a rate of 50 K/min.

Fig.8 Room temperature WAXD patterns of iPP after melting the β-crystal Shear rate/s-1: (A) 0; (B) 2; (C) 5; (D) 10; (E) 16; (F) 32.

Fig.9 Corresponding integrated WAXD intensity profiles

Fig.10 SAXS patterns of iPP after melting the β-crystal Shear rate/s-1: (A) 0; (B) 2; (C) 5; (D) 10; (E) 16; (F) 32.

Fig.11 Integrated SAXS intensity distribution along the orientation direction(A) and corresponding long spacing(B) Shear rate/s-1: a. 0; b. 2; c. 5; d. 10; e. 16; f. 32.

参考文献 19

[1]	An F. Z., Gao X. Q., Lei J., Deng C., Li Z. M., Shen K. Z., Chinese J. Polym. Sci., 2015, 33, 688—696
[2]	Xu Z. B., Su L.Y., Wang P. F., Peng M., Chinese J. Polym. Sci., 2015, 33, 1114—1124
[3]	Geng C. Z., Zhu Y. L., Yang G. H., Fu Q., Zhang C. L., Wang K., Zhou T. N., Chinese J. Polym. Sci., 2014, 32, 9—20
[4]	Wen H. Y., Xiao S. L., Li H. F., Jiang S. C., An L. J., Chem. J. Chinese Universities, 2011, 32(10), 2427—2431
	(温慧颖, 肖生苓, 李宏飞, 蒋世春, 安立佳. 高等学校化学学报, 2011, 32(10), 2427—2431)
[5]	Qiao J.L., Zhang S. J., Polypropylene and Polybutene Resins-Applications, Chemical Industry Press, Beijing, 2011
	(乔金樑, 张师军. 聚丙烯和聚丁烯树脂及其应用, 北京: 化学工业出版社, 2011)
[6]	Zhao G. Y., Wang Y., Men Y. F., Jiang W., Chem. J. Chinese Universities, 2008, 29(4), 842—846
	(赵桂艳, 王颖, 门永锋, 姜伟. 高等学校化学学报, 2008, 29(4), 842—846)
[7]	Kitade S., Asuka K., Akiba I., Sanada Y., Sakurai K., Masunaga H.,Polymer, 2013, 54, 246—257
[8]	Somani R. H., Hsaio B. S., Nogales A., Fruitwala H., Srinivas S., Tsou A. H., Macromolecues, 2001, 34, 5902—5909
[9]	Somani R. H., Hsaio B. S., Nogales A., Srinivas S., Tsou A. H., Sics I., Calleja-Balta F.J., Ezquerra A. T., Macromolecues, 2000, 33, 9385—9394
[10]	Chen Y. H., Fang D. F., Lei J., Li L. B., Hsiao B. S., Li Z. M., J. Phys. Chem. B, 2015, 119, 5716—5727
[11]	Huo H. J., Jiang S. C., An L. J., Feng J. C., Macromolecues, 2004, 37, 2478—2483
[12]	Geng Y., Wang G. L., Cong Y. H., Bai L. G., Li L. B., Yang C. L., Macromolecules, 2009, 42, 4751—4757
[13]	Mo Z.S., Zhang H. F., Zhang J. D., The Structure of Crystalline Polymer and X-ray Diffraction, Science Press, Beijing, 2010
	(莫志深, 张宏放, 张吉东. 晶态聚合物结构和X射线衍射, 北京: 科学出版社, 2010)
[14]	Varga J., J. Therm. Anal., 1989, 35, 1891—1912
[15]	Hong H., Effect of Shear on Crystallization Behavior of iPP, Changchun Institute of Applied Chemistry, Changchun, 2004
	(霍红. 剪切对iPP结晶行为的影响, 长春: 长春应用化学研究所, 2004)
[16]	Zhang G., Fu Q., Shen K., Jian L., Wang Y., J. Appl. Polym. Sci., 2002, 86, 58—63
[17]	Glatter O., Kratky O., Small-Angle X-ray Scattering, Academic Press, London, 1982
[18]	Jiang Z. Y., Tang Y. J., Rieger J., Enderle H. F., Lilge D., Roth S. V., Gehrke R., Wu Z. W., Li Z. H., Men Y. F., Polymer, 2009, 50, 4101—4111
[19]	Rybnikar F., J. Macromol. Sci. Phys., 1991, 30, 201—223

剪切速率对等规聚丙烯的结晶和形貌的影响

Influence of Shear on i-Polypropylene Crystallization and Morphology^†

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 12

参考文献 19

相关文章 9

编辑推荐

Metrics

本文评价

[1]	马亚萍, 张宁, 郑伟平, 肖玮佳, 刘晨光, 贺爱华, 邵华锋. 等规聚丙烯/聚丁烯-1釜内合金的结构与性能[J]. 高等学校化学学报, 2020, 41(12): 2851.
[2]	周丽娟, 张秀芹, 李荣波, 苏允兰, 赵莹, 王笃金, 徐端夫. 等规聚丙烯在γ射线辐照下的链结构和结晶行为[J]. 高等学校化学学报, 2012, 33(04): 850.
[3]	李延春刘鸿黄旭日孙家锺. 均聚物链吸附在胶束表面上的非平衡态耗散粒子动力学[J]. 高等学校化学学报, 2011, 32(8): 1845.
[4]	刘毓海, 李慧珍, 刘溪, 胡丽萍, 杨展澜, 徐怡庄, 吴瑾光. 过冷等规聚丙烯熔体的流变学行为[J]. 高等学校化学学报, 2010, 31(8): 1671.
[5]	林名桢, 李传宪, 杨飞, 郁振华, 刘雅慧. 含蜡原油胶凝过程特性研究[J]. 高等学校化学学报, 2008, 29(11): 2239.
[6]	朱连超,唐功本,石强,殷敬华 . 稀土化合物参与的聚丙烯反应挤出接枝马来酸酐[J]. 高等学校化学学报, 2006, 27(5): 970.
[7]	徐善生, 田公路, 王佰全, 周秀中, 梁波, 赵亮. 柄型金属有机化合物(V)——锗桥连茚基及取代茚基锆化合物的合成及催化烯烃聚合[J]. 高等学校化学学报, 2002, 23(4): 595.
[8]	朱新远, 方亚鹏, 李勇进, 颜德岳, 竺品芳, 路庆华. 原位傅里叶变换红外光谱跟踪等规聚丙烯在升温过程中的构象变化[J]. 高等学校化学学报, 2001, 22(8): 1425.
[9]	冯嘉春, 陈鸣才, 黄志镗. 硬脂酸镧复合物对聚丙烯β晶型的诱导作用[J]. 高等学校化学学报, 2001, 22(1): 154.

剪切速率对等规聚丙烯的结晶和形貌的影响

Influence of Shear on i-Polypropylene Crystallization and Morphology†

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 12

参考文献 19

相关文章 9

编辑推荐

Metrics

本文评价

Influence of Shear on i-Polypropylene Crystallization and Morphology^†