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文章编号： 1672-6987（2023）06-0076-05； DOI： 10.16351/j.1672-6987.2023.06.009
温帅， 牛秀， 岳倩倩， 聂华荣*(青岛科技大学 高分子科学与工程学院，山东 青岛 26
摘要： 聚丁烯-1作为一种多晶态聚合物，在拉伸过程中晶体结构会逐渐由亚稳态的晶型Ⅱ转变为稳定的晶型Ⅰ。利用原位广角X射线衍射，研究了不同温度下聚丁烯-1在拉伸过程中的晶型转变，以及预成核过程对聚丁烯-1晶型转变的影响。结果发现：拉伸温度越高，晶型转变越慢；预成核可以加速聚丁烯-1的晶型转变；此外，拉伸温度越高，预成核对晶型转变的促进作用也越明显。
关键词： 聚丁烯-1； 晶型转变； 预成核； 拉伸温度
中图分类号： TQ 325.1+5文献标志码： A
引用格式： 温帅， 牛秀， 岳倩倩， 等. 拉伸过程中温度和预成核对聚丁烯-1晶型转变的影响［J］. 青岛科技大学学报(自然科学版), 2023, 44（6）： 76-80.
WEN Shuai, NIU Xiu, YUE Qianqian, et al. Effects of temperature and pre-nucleation on strain-induced crystal transition of polybutene-1［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2023， 44（6）： 76-80.
Effects of Temperature and Pre-nucleation on Strain-Induced
Crystal Transition of Polybutene-1
WEN Shuai, NIU Xiu, YUE Qianqian, NIE Huarong
(College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: As a polymorphic polymer, polybutene-1 undergoes crystal transition from metastable form Ⅱ to stable form Ⅰ during a stretching process. In this study, the strain-induced crystal transition of polybutene-1 at different temperatures and the influence of pre-nucleation on the crystal transition were studied by in situ wide-angle X-ray diffraction. It was discovered that the crystal transition was retarded at a high stretching temperature, and the pre-nucleation could accelerate the crystal transition. Moreover, a higher stretching temperature gave rise to an improved acceleration of crystal transition when pre-nucleation was employed.
Key words: polybutene-1; crystal transition; pre-nucleation; stretching temperature
收稿日期： 2022-11-03
基金项目： 国家自然科学基金项目（51973101）；山东省自然科学基金项目（ZR2020KE014, ZR2019MB072, ZR2020ME0792）；山东省重大科技创新工程项目（2019JZZY010352）；泰山学者工程项目（2022）.
作者简介： 温帅(1996-), 男, 硕士研究生.*通信联系人.
