Web2 days ago · Non-solvent post-modifications with volatile reagents for remarkably porous ketone functionalized polymers of intrinsic microporosity Nat Commun. ... in a single step using volatile reagents and through a counter-intuitive non-solvent approach that enables surface area preservation. The modifications are simple, scalable ... Web5 rows · Dec 2, 2012 · The problems related to crazing in polymers are of special interest to polymer scientists ...
(PDF) Correction: Surface Nanopatterning Using the Self
WebESC and polymer resistance to ESC (ESCR) have been studied for several decades. Research shows that the exposure of polymers to liquid chemicals tends to accelerate the crazing process, initiating crazes at stresses that … WebFor composite films preparation, PL and blends of PL and starch have been chosen as polymeric matrixes. Pores formation in the polymer films occurred during the process of uniaxial stretching in the presence of ethanol or water-ethanol mixtures via the solvent-crazing mechanism. The diameter of pores and fibrils in crazed PL was 20–30 nm. the photochemical smog does not contain
Non-solvent post-modifications with volatile reagents for …
WebMar 9, 2024 · Polymer crazing is typically a precursor to damage and considerably reduces the mechanical performance of polymer materials. The concentrated stress caused by … WebIt has been stated that polymer crystallization happens in crazes involving nanofibrils with a diameter of about 10-20 nm without affecting the bulk polymer parts, and wide-angle X … WebApr 10, 2024 · In this study, the influence of the solvent environment on crazing initiation in the absence of tensile stress was evaluated in Groups 1-2 and 5-6. The experiments showed that nonmilled regular PMMA and oriented PMMA in Groups 1-2 were immersed in alcohol and showed no crazing on the surface; instead, a swelling phenomenon appeared on both … the photo classroom charlotte