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Cover Image, Volume 130, Issue 1
Publication year - 2013
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.39082
Subject(s) - cover (algebra) , volume (thermodynamics) , polymer science , materials science , mathematics , engineering , physics , thermodynamics , mechanical engineering
As a plastic that is halfway between common nylons and polyethylene, polyamide 12 (PA12) is an attractive engineering polymer in compact form. Hsu‐Hsien Chang et al. on page 14 consider it as a framework material for porous polymeric membranes. The cover image shows a detailed micrograph of the porous bulk of a skinned PA12 membrane fabricated via water precipitation from a formic acid solution at an elevated temperature. Liquid‐liquid phase separation and subsequent polymer crystallization lead, upon drying, to the formation of a cellular porous structure. Semicrystalline polymer pore walls exhibit a texture with distinct lamella‐type entities.