CRYSTALLIZATION BEHAVIOR AND MORPHOLOGY OF ONE-STEP REACTION COMPATIBILIZED MICROFIBRILLAR REINFORCED ISOTACTIC POLYPROPYLENE/POLY(ETHYLENE TEREPHTHALATE) (iPP/PET) BLENDS

Ling Xu; Gan-ji Zhong; Xu Ji; Zhong-ming Li

doi:10.1007/s10118-011-1066-2

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CRYSTALLIZATION BEHAVIOR AND MORPHOLOGY OF ONE-STEP REACTION COMPATIBILIZED MICROFIBRILLAR REINFORCED ISOTACTIC POLYPROPYLENE/POLY(ETHYLENE TEREPHTHALATE) (iPP/PET) BLENDS

PAPER | Updated：2021-06-21

- CRYSTALLIZATION BEHAVIOR AND MORPHOLOGY OF ONE-STEP REACTION COMPATIBILIZED MICROFIBRILLAR REINFORCED ISOTACTIC POLYPROPYLENE/POLY(ETHYLENE TEREPHTHALATE) (iPP/PET) BLENDS
- CRYSTALLIZATION BEHAVIOR AND MORPHOLOGY OF ONE-STEP REACTION COMPATIBILIZED MICROFIBRILLAR REINFORCED ISOTACTIC POLYPROPYLENE/POLY(ETHYLENE TEREPHTHALATE) (iPP/PET) BLENDS
- Chinese Journal of Polymer Science 2011年29卷第5期页码：540-551
- Affiliations：
  
  a.College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
  b.School of Chemical Engineering, Sichuan University, Chengdu 610065, China
- Author bio：
  
  **Zhong-ming Li (李忠明), E-mail: zmli@scu.edu.cn
- Funds：
  
  National Natural Science Foundation of China(20776087);National Programs for High Technology Research and Development of China(2008AA03Z510)
- DOI：10.1007/s10118-011-1066-2
  中图分类号：
- 收稿：2010-08-27，
  
  修回：2010-10-13，
  
  录用：2010-10-25，
  
  纸质出版：2011
- Accepted：
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Ling Xu, Gan-ji Zhong, Xu Ji, 等. CRYSTALLIZATION BEHAVIOR AND MORPHOLOGY OF ONE-STEP REACTION COMPATIBILIZED MICROFIBRILLAR REINFORCED ISOTACTIC POLYPROPYLENE/POLY(ETHYLENE TEREPHTHALATE) (iPP/PET) BLENDS[J]. Chinese Journal of Polymer Science, 2011,29(5):540-551.

Ling Xu, Gan-ji Zhong, Xu Ji, et al. CRYSTALLIZATION BEHAVIOR AND MORPHOLOGY OF ONE-STEP REACTION COMPATIBILIZED MICROFIBRILLAR REINFORCED ISOTACTIC POLYPROPYLENE/POLY(ETHYLENE TEREPHTHALATE) (iPP/PET) BLENDS[J]. Chinese Journal of Polymer Science, 2011, 29(5): 540-551. DOI: 10.1007/s10118-011-1066-2.
Ling Xu, Gan-ji Zhong, Xu Ji, 等. CRYSTALLIZATION BEHAVIOR AND MORPHOLOGY OF ONE-STEP REACTION COMPATIBILIZED MICROFIBRILLAR REINFORCED ISOTACTIC POLYPROPYLENE/POLY(ETHYLENE TEREPHTHALATE) (iPP/PET) BLENDS[J]. Chinese Journal of Polymer Science, 2011,29(5):540-551. DOI： 10.1007/s10118-011-1066-2.

Ling Xu, Gan-ji Zhong, Xu Ji, et al. CRYSTALLIZATION BEHAVIOR AND MORPHOLOGY OF ONE-STEP REACTION COMPATIBILIZED MICROFIBRILLAR REINFORCED ISOTACTIC POLYPROPYLENE/POLY(ETHYLENE TEREPHTHALATE) (iPP/PET) BLENDS[J]. Chinese Journal of Polymer Science, 2011, 29(5): 540-551. DOI: 10.1007/s10118-011-1066-2. DOI：

摘要

Abstract

One-step reaction compatibilized microfibrillar reinforced

PP/PET blends (CMRB) were successfully prepared through a "slit extrusion-hot stretching-quenching" process. Crystallization behavior and morphology of CMRB were systematically investigated. Scanning electronic microscopy (SEM) observations showed blurry interface of compatibilized common blend (CCB). The crystallization behavior of neat

CCB

microfibrillar reinforced

PP/PET blend (MRB) and CMRB was investigated by differential scanning calorimetry (DSC) and polarized optical microscopy (POM). The increase of crystallization temperature and crystallization rate during nonisothermal crystallization process indicated both PET particles and microfibrils could serve as nucleating agents and PET microfibrils exhibited higher heterogeneous nucleation ability

which were also vividly revealed by results of POM. Compared with MRB sample

CMRB sample has lower crystallization temperature due to existence of PET microfibrils with smaller aspect ratio and wider distribution. In addition

since

in situ

compatibilizer tends to stay in the interphase

it could also hinder the diffusion of

PP molecules to the surface of PET phase

leading to decrease of crystallization rate. Two-dimensional wide-angle X-ray diffraction (2D-WAXD) was preformed to characterize the crystalline structure of the samples by injection molding

and it was found that well-developed PET microfibrils contained in MRB sample promoted formation of

-phase of

PP.

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