Effects of linear low density polyethylene on physical properties and irradiation effectiveness of polypropylene

被引：2
作者：
Dahal, Prashanta [1 ]
Kim, Jung Hee [1 ]
Kim, Youn Cheol [1 ]
机构：
[1] Kongju Natl Univ, Cheonan 330717, South Korea
来源：
KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2014年 / 31卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
Polypropylene; Linear Low Density Polyethylene; Co-agent; Cross-linking; Irradiation; ELECTRON-BEAM IRRADIATION; RHEOLOGICAL PROPERTIES; MECHANICAL-PROPERTIES; MORPHOLOGY; MELT; CRYSTALLIZATION; PROPYLENE; BEHAVIOR;
D O I：
10.1007/s11814-013-0189-2
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Blends of polypropylene (PP)/linear low density polyethylene (LLDPE) were prepared by melt mixing in twin screw extruder at 190 A degrees C. Polyfunctional monomer TMPTMA (trimethylolpropane-trimetacrylate) was added to the mixture as a crosslinking co-agent to improve the crosslinking or branching efficiency of the olefins during irradiation. The effect of LLDPE on the crosslinking or branching effectiveness and physical properties of PP was investigated in conjunction with the monomer content of LLDPE in the blends. Thermal stability, rheological properties and electron beam irradiation effectiveness of PP in presence of LLDPE were analyzed by DSC, TGA and RDS. Solution gel analysis and the presence of -C=O in FT-IR test supported some crosslinking or branching that occurred after irradiation. Certain decrease in melting temperature (T (m) ) that was noticed after irradiation could have been the result of chain scissioning, which decreases the number of tie molecules in the amorphous region and consequently weakens the lamellar connections. Shear thinning effect and zero shear viscosity were improved by irradiation in the PE incorporated samples.
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页码：1 / 5
页数：5
相关论文
共 30 条
[21]   Modification of radiation cross-linked polypropylene [J].
Shukushima, S ;
Hayami, H ;
Ito, T ;
Nishimoto, S .
RADIATION PHYSICS AND CHEMISTRY, 2001, 60 (4-5) :489-493
[22]   RADIATION CROSSLINKING OF POLYMER BLENDS [J].
SPENADEL, L .
RADIATION PHYSICS AND CHEMISTRY, 1979, 14 (3-6) :683-697
[23]   Implications of LDPE branching and Mw on thermal and mechanical properties of PP/LDPE blends [J].
Suleiman, Mohammed A. ;
Hussein, Ibnelwaleed A. .
MACROMOLECULAR SYMPOSIA, 2008, 263 :130-137
[24]   The preparation and rheology characterization of long chain branching polypropylene [J].
Tian, Jinghua ;
Yu, Wei ;
Zhou, Chixing .
POLYMER, 2006, 47 (23) :7962-7969
[25]   Rheological characterization of long chain branching in a melt of evolving molecular architecture [J].
Tsenoglou, CJ ;
Gotsis, AD .
MACROMOLECULES, 2001, 34 (14) :4685-4687
[26]   STRUCTURE AND PROPERTIES OF PROPYLENE-ETHYLENE BLOCK COPOLYMERS AND THE CORRESPONDING BLENDS [J].
WANG, LX ;
HUANG, BT .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1990, 28 (06) :937-949
[27]   Impact of processing history on rheological properties for branched polypropylene [J].
Yamaguchi, Masayuki ;
Wagner, Manfred H. .
POLYMER, 2006, 47 (10) :3629-3635
[28]   Study of the rheological properties and crystallization behavior of branched PP/silicate composites [J].
Yoon, Kyung Hwa ;
Park, Sung ;
Kim, Youn Cheol .
POLYMER JOURNAL, 2012, 44 (11) :1098-1104
[29]  
Zahi W., 2001, IND ENG CHEM RES, V50, P7282
[30]   The ductile-brittle transition of irradiated isotactic polypropylene studied using simultaneous small angle X-ray scattering and tensile deformation [J].
Zhang, XC ;
Butler, MF ;
Cameron, RE .
POLYMER, 2000, 41 (10) :3797-3807
123