Crystallization and Phase Behavior in Block Copolymer Solution: An in Situ Small Angle X-ray Scattering Study

doi:10.1007/s10118-019-2258-4

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Crystallization and Phase Behavior in Block Copolymer Solution: An in Situ Small Angle X-ray Scattering Study
	Zhu, HY ; Tian, F ; Li, XH ; Qiu, HB ; Wang, J
刊名	CHINESE JOURNAL OF POLYMER SCIENCE
	2019
卷号	37 期号:11 页码:1162-1168
ISSN号	0256-7679
DOI	10.1007/s10118-019-2258-4
文献子类	期刊论文
英文摘要	Amphiphilic diblock copolymers self-assemble into a variety of micellar structures with diverse shapes in selective solvents. Here, we study the concentration and temperature dependence of the packing structure of spherical micelles of a polyisoprene-b-poly(2-vinylpyridine) (PI-b-P2VP) diblock copolymer in toluene using synchrotron radiation small angle X-ray scattering (SR-SAXS) and atomic force microscopy (AFM) techniques. Randomly packed spherical micelles are detected in dilute solutions, while in concentrated solutions, face-centered cubic (FCC), body-centered cubic (BCC) mixed crystal structures, and pure BCC crystal structures are observed with an increase in concentration. In situ SAXS experiments on the FCC/BCC mixed crystal structures reveal a novel FCC/BCC -> BCC -> Disorder -> BCC phase behavior during the thermal annealing process. These results demonstrated that the BCC phase is apparently more stable than the FCC phase in the current sphere-packing system and FCC/BCC is a metastable state. The incompatibility of the PI and P2VP blocks decreases at a higher temperature and renders the variation of domain spacing.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32018]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Shanghai Adv Res Inst, Zhangjiang Lab, Shanghai 201204, Peoples R China; 4.Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
推荐引用方式 GB/T 7714	Zhu, HY,Tian, F,Li, XH,et al. Crystallization and Phase Behavior in Block Copolymer Solution: An in Situ Small Angle X-ray Scattering Study[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2019,37(11):1162-1168.
APA	Zhu, HY,Tian, F,Li, XH,Qiu, HB,&Wang, J.(2019).Crystallization and Phase Behavior in Block Copolymer Solution: An in Situ Small Angle X-ray Scattering Study.CHINESE JOURNAL OF POLYMER SCIENCE,37(11),1162-1168.
MLA	Zhu, HY,et al."Crystallization and Phase Behavior in Block Copolymer Solution: An in Situ Small Angle X-ray Scattering Study".CHINESE JOURNAL OF POLYMER SCIENCE 37.11(2019):1162-1168.