Wen-le LI, Zhen-hao LI, Hua-yi LI, You-liang HU. Progress of the Synthesis of High Performance Long Chain Branched Polyethylene[J]. Polymer Bulletin, 2011,24(7):37-43.
Wen-le LI, Zhen-hao LI, Hua-yi LI, You-liang HU. Progress of the Synthesis of High Performance Long Chain Branched Polyethylene[J]. Polymer Bulletin, 2011,24(7):37-43. DOI: 10.14028/j.cnki.1003-3726.2011.07.006.
long chain branched polyethylene (LCB-PE) shows much excellent rheological behavior than the other polyethylene structure and can be used to modify the polymer process.Now
radiation
metallocene catalysts and hydrogenation of polybutadiene methods were used to prepare LCB-PE.In this paper
the principle
advantage and disadvantage of each method were reviewed.The radiation method can be easily applied in the industry scale.But the detail structure of the LCB-PE is hard to be characterized
and the equipment is highly requested to resist the high energy radiation.The preparation process of LCB-PE by metallocene catalysts can be easily controlled
and the LCB-PE can be characterized clearly.However
the technology is hard to application in China because the patents about metallocene catalysts.The LCB-PE prepared by the hydrogenation of polybutadiene method is well-controlled and well-defined
the length of main chain and branch chain and the density of branch all can be controlled
but he produce is too complex and the cost is too high.