Flow-induced crystallization precursor structure in high molecular weight isotactic polypropylene (HMW-iPP)/low molecular weight linear low density polyethylene (LMW-LLDPE) binary blends

Polymer ◽  
2013 ◽  
Vol 54 (4) ◽  
pp. 1425-1431 ◽  
Author(s):  
Jong Kahk Keum ◽  
Yimin Mao ◽  
Feng Zuo ◽  
Benjamin S. Hsiao
Keyword(s):  
Molecular Weight ◽  
Isotactic Polypropylene ◽  
Low Density Polyethylene ◽  
Low Molecular Weight ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Binary Blends ◽  
Precursor Structure ◽  
Induced Crystallization ◽  
Flow Induced Crystallization

scholarly journals Different Dependence of Tear Strength on Film Orientation of LLDPE Made with Different Co-Monomer

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 434 ◽  
Author(s):  
Yi Ren ◽  
Ying Shi ◽  
Xuerong Yao ◽  
Yujing Tang ◽  
Li-Zhi Liu
Keyword(s):  
Molecular Weight ◽  
Crystal Orientation ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Machine Direction ◽  
Tear Strength ◽  
Similar Dependence ◽  
Similar Density ◽  
Shrinkage Property

Crystal orientations, tear strength and shrinkage of Linear Low-Density PolyEthylene (LLDPE) films made with different processes (compressed, cast and blown) were investigated. The films were made with three different LLDPE resins, respectively, which have similar density and molecular weight but are made with different comonomers (1-butene, 1-hexene and 1-octene), in order to investigate if tear strength in Machine Direction (MD) of the LLDPE films made with different comonomer has similar dependence on crystal orientation. Our study indicates that the films made of 1-hexene and 1-octene based LLDPE resins have significantly higher intrinsic tear strength and less decrease in MD tear strength for a given film orientation. That is, for a given orientation in MD, the MD tear drops dramatically for films made with butene-based resin but much less decrease for the films made with hexene and octene-based resins. The shrinkage property at high temperature shows a good correlation with crystal orientation and the fraction of the crystals melted at this temperature.

Miscibility in crystalline polymer blends: Isotactic polypropylene and linear low-density polyethylene

2003 ◽  
Vol 90 (12) ◽  
pp. 3338-3346 ◽  
Author(s):  
Giuliana Gorrasi ◽  
Rachele Pucciariello ◽  
Vincenzo Villani ◽  
Vittoria Vittoria ◽  
Sandra Belviso
Keyword(s):  
Polymer Blends ◽  
Isotactic Polypropylene ◽  
Crystalline Polymer ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene
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