Microcellular foaming and mechanical properties of iPP-iPPF using supercritical CO2

被引：3
作者：
Zuo, Kailong [1 ]
Li, Kun [1 ]
Yun, Zhigeng [1 ]
He, Guangjian [2 ]
Islam, Syed Rashedul [3 ]
Yang, Yang [1 ]
Zhang, Xiaoli [1 ]
Chen, Jingbo [1 ]
机构：
[1] Zhengzhou Univ, Natl Engn Res Ctr Adv Polymer Proc Technol, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China
[2] South China Univ Technol, Guangdong Prov Key Lab Tech & Equipment Macromol A, Guangzhou 510006, Peoples R China
[3] Donghua Univ, Coll Text, Key Lab Text Sci & Technol, Minist Educ, Shanghai 201620, Peoples R China
来源：
JOURNAL OF SUPERCRITICAL FLUIDS | 2022年 / 190卷
基金：
中国国家自然科学基金;
关键词：
Isotactic polypropylene; Microcellular foaming; Partially melted polypropylene fiber; Mechanical property; CELL STRUCTURE; NUCLEATING-AGENT; POLYPROPYLENE; BEHAVIOR; CRYSTALLIZATION; COMPOSITES; BLENDS; POLYSTYRENE; MORPHOLOGY;
D O I：
10.1016/j.supflu.2022.105754
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Isotactic polypropylene (iPP) is one of the most widely used commercial polymers in the industry. However, it is difficult to foam iPP due to its low melt strength. In this work, the foamability and mechanical properties of iPP were investigated by incorporating isotactic polypropylene fiber (iPPF), using a batch foaming method. Compared to the neat iPP foams, smaller cell size and more uniform cell size distribution were obtained for iPP-iPPF. When 30 % iPPF was added, the cell density of iPP-iPPF foam was 1.1 x 1010 cells/cm3 which was twice that of the neat iPP foam. It was attributed to the improved melt strength and heterogeneous nucleation of iPPF in the iPP matrix. In addition, the impact strength of foamed iPP-30iPPF was found to be increased by 136 % compared to its neat iPP counterpart. Furthermore, the tensile strength of the foamed samples also increased with the increasing iPPF content.
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页数：8
相关论文
共 48 条
[21]   Foaming of linear isotactic polypropylene based on its non-isothermal crystallization behaviors under compressed CO2 [J].
Li, Da-Chao ;
Liu, Tao ;
Zhao, Ling ;
Yuan, Wei-Kang .
JOURNAL OF SUPERCRITICAL FLUIDS, 2011, 60 :89-97
[22]   Cell structure and impact properties of foamed polystyrene in constrained conditions using supercritical carbon dioxide [J].
Li, Manman ;
Cao, Xiaomiao ;
Luo, Yuanxiang .
IRANIAN POLYMER JOURNAL, 2014, 23 (10) :775-781
[23]   Morphology and properties in the binary blends of polypropylene and propylene-ethylene random copolymers [J].
Li, Yi ;
Li, Yang ;
Han, Changyu ;
Yu, Yancun ;
Xiao, Liguang .
POLYMER BULLETIN, 2019, 76 (06) :2851-2866
[24]   Effect of nanosize CaCO3 and nanoclay on morphology and properties of linear PP/branched PP blend foams [J].
Mehdipour, Narges Mohammad ;
Garmabi, Hamid ;
Jamalpour, Seifollah .
POLYMER COMPOSITES, 2019, 40 :E227-E241
[25]   Microcellular and nanocellular solid-state polyetherimide (PEI) foams using sub-critical carbon dioxide II. Tensile and impact properties [J].
Miller, Dustin ;
Kumar, Vipin .
POLYMER, 2011, 52 (13) :2910-2919
[26]   Foams with Enhanced Ductility and Impact Behavior Based on Polypropylene Composites [J].
Munoz-Pascual, Santiago ;
Saiz-Arroyo, Cristina ;
Vuluga, Zina ;
Cosmin Corobea, Mihai ;
Angel Rodriguez-Perez, Miguel .
POLYMERS, 2020, 12 (04)
[27]   Crystal morphology and transcrystallization mechanism of isotactic polypropylene induced by fibres:: interface nucleation versus bulk nucleation [J].
Na, B ;
Guo, M ;
Yang, JH ;
Tan, H ;
Zhang, Q ;
Fu, Q .
POLYMER INTERNATIONAL, 2006, 55 (04) :441-448
[28]   Strategies for achieving ultra low-density polypropylene foams [J].
Naguib, HE ;
Park, CB .
POLYMER ENGINEERING AND SCIENCE, 2002, 42 (07) :1481-1492
[29]   Microcellular foam of polymer blends of HDPE/PP and their composites with wood fiber [J].
Rachtanapun, P ;
Selke, SEM ;
Matuana, LM .
JOURNAL OF APPLIED POLYMER SCIENCE, 2003, 88 (12) :2842-2850
[30]   Open-celled microcellular thermoplastic foam [J].
Rodeheaver, BA ;
Colton, JS .
POLYMER ENGINEERING AND SCIENCE, 2001, 41 (03) :380-400
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