Results 211 to 220 of about 23,452,503 (249)

Morphological Evidence for the Two-Step II–I Phase Transition of Isotactic Polybutene-1

Macromolecules, 2019
Thin films of isotactic polybutene-1 (iPBu) with large lathlike flat-on form II crystals were prepared by isothermal crystallization from melt at 105 °C.
Rui Xin, Zhixin Guo, Yunpeng Li, Xiaoli Sun, Meiling Xue, Jie Zhang, Shouke Yan   +6 more
semanticscholar   +1 more source

Spherulite growth of polybutene-1 in a thermal gradient

Polymer Bulletin, 1990
Polybutene-1 can form oriented spherulites when crystallized in a thermal gradient because the nucleation is suppressed in the high temperature region and the spherulite growth is obstructed except towards the high temperature. The difference of the growth rate in different radial directions leads to the change of the lamellar growth direction from ...
J. Petermann, Y. Huang
openaire   +2 more sources

Identifying a Mesomorphic Boundary Zone within Polybutene-1 Single Crystals Emerging During a Crystal–Crystal Transformation

Macromolecules, 2023
Jinlong Chen, Binghua Wang, Changyu Shen, Jingbo Chen, G. Reiter, Bin Zhang   +5 more
semanticscholar   +1 more source

Memory Effect on the Form II to I Phase Transition of Isotactic Polybutene-1 in a Flow Field

Macromolecules, 2023
Wenjia Wei, Lincheng Ji, Heng Zhang, Yuru Zhang, Fengmei Su, Chuntai Liu   +5 more
semanticscholar   +1 more source

Unusual II–I Phase Transition Behavior of Polybutene-1 Ionomers in the Presence of Long-Chain Branch and Ionic Functional Groups

Macromolecules, 2019
The mutual effects of long-chain branch and ionic functional groups on polybutene-1 (PB-1) phase transition from tetragonal form II into hexagonal form I of polybutene-1 were investigated using differential scanning calorimetry and various thermal ...
Chuanbin An, Yahui Lou, Yulian Li, Bin Wang, L. Pan, Zhe Ma, Yuesheng Li   +6 more
semanticscholar   +1 more source

Melt Memory Effect beyond the Equilibrium Melting Point in Commercial Isotactic Polybutene-1

Industrial & Engineering Chemistry Research, 2019
The memory effect denotes acceleration of crystallization kinetics in polymers when being cooled from the molten state. Using the method of differential scanning calorimetry (DSC), we found that a commercial isotactic polybutene-1 (i PB-1) sample showed ...
Peiru Liu, Yanhu Xue, Yongfeng Men
semanticscholar   +1 more source

Equilibrium Melting Temperature of the Hexagonal Crystals of Polybutene-1 and Its Copolymer

Macromolecules, 2023
Yanan Qin, Ying Lu, V. Litvinov, Yongfeng Men   +3 more
semanticscholar   +1 more source

Refinement of the Crystal Structures of Forms I and II of Isotactic Polybutene-1 and a Proposal of Phase Transition Mechanism between Them

, 2016
The new crystal structure models of forms I and II of isotactic polybutene-1 have been proposed by analyzing the 2-dimensional X-ray diffraction data measured for the highly oriented samples of almost pure crystal forms.
K. Tashiro, Jianmei Hu, Hai Wang, M. Hanesaka, A. Saiani   +4 more
semanticscholar   +1 more source

Strain-Rate-Dependent Phase Transition Mechanism in Polybutene-1 during Uniaxial Stretching: From Quasi-Static to Dynamic Loading Conditions

Macromolecules, 2022
Shengyao Feng, Jianhe Zhu, Wancheng Yu, Hang Guo, Wei Chen, Ai Lu, Liangbin Li   +6 more
semanticscholar   +1 more source

Chain Entanglements and Interlamellar Links in Isotactic Polybutene-1: The Effect of Condis Crystals and Crystallization Temperature

Macromolecules, 2022
Yanan Qin, Wenbo Song, Ming Chen, V. Litvinov, Yongfeng Men   +4 more
semanticscholar   +1 more source