Effect of alcohol on morphology and structure of PE/MMT nano composite
LI San-xi
ZHANG Jin-duo
LV Dan
WANG Song
Abstract：In order to solve the problem that the poor morphology of polymer will influence its bulk density, it is expected to control the morphology of catalysts through changing the preparation conditions,and thus to obtain the polymer with good morphology and improve the bulk density of polymer.Through utilizing such characteristics as the dissolution of MgCl2 in alcohol and the expansion of MMT in the middle layer of alcohol,the catalysts with MgCl2 /TiCl4 being supported between the MMT layers were prepared,and the PE/MMT nano composite was also prepared through in-situ polymerization.Through controlling the types of alcohol used in the preparation of carrier,the morphology and structure of both catalysts and PE/MMT nano composite were characterized with SEM.The results show that the length of carbon chain and the dosage of alcohol will affect the morphology of catalysts and polyethylene particles.When the alcohol mixed with both butanol and isooctanol is used in the preparation of carrier and the mole ratio of butanol, isooctanol and MgCl2 is 2∶0.6∶1,the prepared catalysts and polyethylene particles are closer to sphericity. Moreover,the bulk density of polyethylene in the obtained product can reach 0.34 g /cm3 .
Keywords：magnesium chloridemontmorillonite (MMT)butanolisooctanolmorphologysphericitybulk densitypolyethylene
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 631-635 )