ICCAS OpenIR
High resolution transmission electron microscopy studies on nano-sized crystals of polyethylene and polypropylene
Chen, JF; Yin, L; Zhou, YC; Zhou, EL
2004-04-10
Source PublicationCHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN0251-0790
Volume25Issue:4Pages:766-769
AbstractWhen polymer crystallized from its dilute solution, the formation. of small crystallites is difficult because of the balance between the favorable energy decrease as the more stable crystal formed and the unfavorable interface energy increasing with the forming of crystallites, thus the crystallites smaller than a minimum critical size are unstable and will be disappear or grow to larger size crystals. In this paper, High Resolution Transmission Electron Microscopy (HRTEM) technology was used in the study of polyethylene (PE) and polypropylene (PP) nano-sized crystals obtained from their dilute solution of xylene. The results showed that the molecular packing in these crystals was far from perfect one. There were many defects such as distortion, branches, and dislocation in the crystals. After isothermal crystallization at the temperature of 413 K, the crystallinity was improved greatly. All these proved that the high, resolution transmission electron microscopy technique was very powerful in the study on polymer crystal at the level of molecules, and the nano-sized crystals were another stable crystal state of PE and PP.
KeywordPolyethylene Polypropylene Nano-sized Crystal Hrtem
Indexed BySCI
Language英语
WOS IDWOS:000220774500045
PublisherHIGHER EDUCATION PRESS
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/81618
Collection中国科学院化学研究所
Corresponding AuthorZhou, EL
AffiliationChinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Chen, JF,Yin, L,Zhou, YC,et al. High resolution transmission electron microscopy studies on nano-sized crystals of polyethylene and polypropylene[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2004,25(4):766-769.
APA Chen, JF,Yin, L,Zhou, YC,&Zhou, EL.(2004).High resolution transmission electron microscopy studies on nano-sized crystals of polyethylene and polypropylene.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,25(4),766-769.
MLA Chen, JF,et al."High resolution transmission electron microscopy studies on nano-sized crystals of polyethylene and polypropylene".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 25.4(2004):766-769.
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