Structure and properties of injection-molded polypropylenes with different molecular weight distribution and tacticity characteristics

2002 ◽  
Vol 84 (12) ◽  
pp. 2142-2156 ◽  
Author(s):  
Mitsuyoshi Fujiyama ◽  
Yoshiyuki Kitajima ◽  
Hitoshi Inata
Keyword(s):  
Molecular Weight ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Structure And Properties ◽  
Injection Molded ◽  
Different Molecular Weight

Influence and mechanism of different molecular weight organic molecules in natural water on ultrafiltration membrane fouling reversibility

RSC Advances ◽  
2016 ◽  
Vol 6 (86) ◽  
pp. 83456-83465 ◽  
Author(s):  
Weiguang Sun ◽  
Jun Nan ◽  
Jia Xing ◽  
Jiayu Tian
Keyword(s):  
Molecular Weight ◽  
Molecular Weight Distribution ◽  
Natural Water ◽  
Weight Distribution ◽  
Membrane Fouling ◽  
Organic Molecules ◽  
Ultrafiltration Membrane ◽  
Ultrafiltration Membrane Fouling ◽  
Different Molecular Weight

To investigate the influence of different molecular weight distribution to UF membrane fouling, NOM in natural water was fractionated into five components based on their size and their potential to develop the membrane fouling was conducted.

Effect of Microwave Drying on Structure and Properties of Natural Rubber

2012 ◽  
Vol 538-541 ◽  
pp. 2409-2412 ◽  
Author(s):  
Mei Chen ◽  
Fu Quan Zhang ◽  
Yong Zhou Wang ◽  
Mao Fang Huang
Keyword(s):  
Molecular Weight ◽  
Natural Rubber ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Morphological Structure ◽  
Microwave Drying ◽  
Structure And Properties ◽  
Hot Air ◽  
Oxidative Resistance

The morphological structure and properties of wet natural rubber (NR) granulates dried by microwave were studied, which compared with wet NR granulates dried by hot-air. The results show that the molecular weight of NR dried by microwave is higher than that of NR dried by hot-air, and the molecular weight distribution of NR dried by microwave is narrower than that of NR dried by hot-air. The wet NR granules dried by microwave are rough on surfaces and the cutting traces produced during the processing remained on surfaces; whereas the wet NR granules dried by hot-air are smooth on surfaces resulted from melt adhered, and the cutting traces disappeared; the thermal-oxidative resistance of NR vulcanizates dried by microwave improved significantly.

Effect of molecular weight and molecular weight distribution on weld-line interface in injection-molded polypropylene

2013 ◽  
Vol 53 (11) ◽  
pp. 2336-2344 ◽  
Author(s):  
Katsuyuki Yokomizo ◽  
Yoshihiro Banno ◽  
Taketo Yoshikawa ◽  
Masaya Kotaki
Keyword(s):  
Molecular Weight ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Weld Line ◽  
Injection Molded
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