Morphological Study of Linear Low-Density Polyethylene Molded by Gas-Assisted Injection Molding
(804 – 809)  Polymer - Plastics Technology and Engineering 50 #8 (2011)
Sun et al of Sichuan University, China, studied the position dependence for the supermolecular morphology of linear low density polyethylene (LLDPE) prepared by gas-assisted injection molding (GAIM) using scanning electron microscopy (SEM).  Combined morphological feature of both spherulites and those with ring-bands was observed, which differs from our previous studies on the HDPE counterparts.. The difference in hierarchical crystalline structures between LLDPE and HDPE can be due to their different chain branches as well as the resultant different response to the local shear fields during the GAIM process.  (6/9/2011)