南方科技大学知识苑(SUSTech KC): Enhanced Performance of Polybutadiene/Polyisoprene (PB/PI) Blend with Asymmetric PB-b-PI Diblock Copolymers

题名	Enhanced Performance of Polybutadiene/Polyisoprene (PB/PI) Blend with Asymmetric PB-b-PI Diblock Copolymers
作者	Deng, Yinhu1,2,4 ; Sun, He1,2 ; Hu, Xinpeng1,2 ; Wang, Keqiang1,2 ; Long, Chuanjiang 1,2 ; Yu, Feng 1,2 ; Chen, Zhong-Ren1,2,3
通讯作者	Chen, Zhong-Ren
发表日期	2023-07-01
DOI	10.1021/acs.macromol.3c00742
发表期刊	MACROMOLECULES 影响因子和分区
ISSN	0024-9297
EISSN	1520-5835
卷号	56 期号:15页码:5754-5764
摘要	Symmetric block copolymers (BCPs) are widely reportedas the mosteffective BCPs for compatibilizing polymer blends via one-pot mixing.However, many BCPs may not be optimally distributed at the interfacedue to both thermodynamic and kinetic factors. Here, a series of well-definedpolybutadiene-b-polyisoprene (PB-b-PI) diblock copolymers with varied block lengths (asymmetric/symmetric)were studied, while a comparable number-average molecular weight (M-n ) served as a polymer model system in orderto explore the impact of the compositional symmetry of BCPs on compatibilizingPB/PI blends under various kinetic pathways. By a combination of microscopicobservation and rheological and mechanical measurements, it is shownthat the addition of BCPs in PB/PI blends reduces the dispersed domainsize (PB phase) and simultaneously enhances their processability andmechanical performance. Surprisingly, compatibilized blends with asymmetricBCPs could achieve better performance than the blend with symmetricBCPs via sequential mixing. Their properties are even better thanthe one-pot mixed blend with symmetric BCPs. A mechanism is proposedto explain how these asymmetric BCPs could be more easily distributedat the interface than symmetric ones, thus enhancing the mechanicalproperties of PB/PI blends. These intriguing results demonstrate thatthe asymmetric BCP could achieve better compatibilization efficiencythan the symmetric BCP by the synergy between molecular symmetry andkinetic pathways.
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
重要成果	NI论文
学校署名	第一 ; 通讯
资助项目	State Key Research Development Programme of China[2021YFB3800702] ; National Natural Science Foundation of China[22075124] ; Shenzhen Special Fund["JCYJ20190809115013348","JCYJ20210324103811030"] ; Guangdong Provincial Key Laboratory of Catalysis[2020B121201002]
WOS研究方向	Polymer Science
WOS类目	Polymer Science
WOS记录号	WOS:001033283200001
出版者	AMER CHEMICAL SOC
EI入藏号	20233314562204
EI主题词	Kinetics ; Mixing ; Polybutadienes ; Polymer blends
EI分类号	Fluid Flow, General:631.1 ; Chemical Operations:802.3 ; Polymeric Materials:815.1 ; Organic Polymers:815.1.1 ; Polymer Products:817.1 ; Classical Physics; Quantum Theory; Relativity:931
ESI学科分类	CHEMISTRY
来源库	Web of Science
引用统计	被引频次[WOS]：3
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/553288
专题	深圳格拉布斯研究院理学院_化学系
作者单位	1.Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen 518055, Peoples R China 2.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China 3.Southern Univ Sci & Technol, Guangdong Prov Key Lab Catalysis, Shenzhen 518055, Peoples R China 4.Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
第一作者单位	深圳格拉布斯研究院; 化学系
通讯作者单位	深圳格拉布斯研究院; 化学系; 南方科技大学
第一作者的第一单位	深圳格拉布斯研究院
推荐引用方式 GB/T 7714	Deng, Yinhu,Sun, He,Hu, Xinpeng,et al. Enhanced Performance of Polybutadiene/Polyisoprene (PB/PI) Blend with Asymmetric PB-b-PI Diblock Copolymers[J]. MACROMOLECULES,2023,56(15):5754-5764.
APA	Deng, Yinhu.,Sun, He.,Hu, Xinpeng.,Wang, Keqiang.,Long, Chuanjiang.,...&Chen, Zhong-Ren.(2023).Enhanced Performance of Polybutadiene/Polyisoprene (PB/PI) Blend with Asymmetric PB-b-PI Diblock Copolymers.MACROMOLECULES,56(15),5754-5764.
MLA	Deng, Yinhu,et al."Enhanced Performance of Polybutadiene/Polyisoprene (PB/PI) Blend with Asymmetric PB-b-PI Diblock Copolymers".MACROMOLECULES 56.15(2023):5754-5764.