title: Influence of miscibility phenomenon on crystalline polymorph transition in poly(vinylidene fluoride)/acrylic rubber/clay nanocomposite hybrid.
abstract: In this paper, intercalation of nanoclay in the miscible polymer blend of poly(vinylidene fluoride) (PVDF) and acrylic rubber(ACM) was studied. X-ray diffraction was used to investigate the formation of nanoscale polymer blend/clay hybrid. Infrared spectroscopy and X-ray analysis revealed the coexistence of β and γ crystalline forms in PVDF/Clay nanocomposite while α crystalline form was found to be dominant in PVDF/ACM/Clay miscible hybrids. Flory-Huggins interaction parameter (B) was used to further explain the miscibility phenomenon observed. The B parameter was determined by combining the melting point depression and the binary interaction model. The estimated B values for the ternary PVDF/ACM/Clay and PVDF/ACM pairs were all negative, showing both proper intercalation of the polymer melt into the nanoclay galleries and the good miscibility of PVDF and ACM blend. The B value for the PVDF/ACM blend was almost the same as that measured for the PVDF/ACM/Clay hybrid, suggesting that PVDF chains in nanocomposite hybrids interact with ACM chains and that nanoclay in hybrid systems is wrapped by ACM molecules.
authors.affiliation: Chemical Engineering Department, Kashan University, Kashan, Iran.
authors.forename: Mohammad Mahdi
authors.initials: MM
authors.lastname: Abolhasani
authors.affiliation: Institute for Frontier Materials, Deakin University, Geelong, Australia.
authors.forename: Minoo
authors.initials: M
authors.lastname: Naebe
authors.affiliation: Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran.
authors.forename: Azam
authors.initials: A
authors.lastname: Jalali-Arani
authors.affiliation: Institute for Frontier Materials, Deakin University, Geelong, Australia.
authors.forename: Qipeng
authors.initials: Q
authors.lastname: Guo
mesh_terms: D000179:Acrylates / Q000737:chemistry*; D000538:Aluminum Silicates / Q000737:chemistry*; D000077215:Clay; D003460:Crystallization; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D044367:Phase Transition; D011145:Polyvinyls / Q000737:chemistry*; D012408:Rubber / Q000737:chemistry*; D012542:Scattering, Radiation; D017550:Spectroscopy, Fourier Transform Infrared; D044366:Transition Temperature; D014961:X-Ray Diffraction; D005465:Fluorocarbon Polymers
chemical_list: D000179:Acrylates; D000538:Aluminum Silicates; D000077215:Clay; D011145:Polyvinyls; D012408:Rubber; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers; C036658:acrylic acid