✦ LIBER ✦

Phase behavior and morphological studies of polyimide/PVP/solvent/water systems by phase inversion

✍ Scribed by Jong Hak Kim; Byoung Ryul Min; Hyun Chae Park; Jongok Won; Yong Soo Kang

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 274 KB
Volume: 81
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1804

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The solubility gaps for poly(vinyl pyrrolidone) (PVP) in four polyimide solutions (NMP, DMF, GBL, DMSO) were determined by cloud point measurement and correlated with χ~PI/Solvent~ and Δδ~PVP/Solvent~. Membranes prepared with NMP and DMF systems showed a tendency of suppressing fingerlike structure with addition of PVP. On the other hand, membranes prepared with GBL and DMSO systems showed an inclination toward inducing macrovoid formation. These effects of PVP on the membrane morphology were explained by means of miscibility gap, viscosity of the polymer solution, polymer–polymer phase separation, and overall porosity. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 3481–3488, 2001

📜 SIMILAR VOLUMES

Isothermal phase diagrams and phase-inve

Isothermal phase diagrams and phase-inversion behavior of poly(vinylidene fluoride)/solvents/additives/water systems

✍ M. L. Yeow; Y. T. Liu; K. Li 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 95 KB

Synthesis of β-Aminophosphonates and Stu

Synthesis of β-Aminophosphonates and Study of Their Acid—Base Properties and Phase Distribution in Water—Organic Solvent Systems.

✍ R. A. Cherkasov; V. I. Galkin; N. G. Khusainova; O. A. Mostovaya; A. R. Garifzya 📂 Article 📅 2006 🏛 John Wiley and Sons ⚖ 17 KB

Phase behavior of a sodium dodecanol all

Phase behavior of a sodium dodecanol allyl sulfosuccinic diester/n-pentanol/methyl acrylate/butyl acrylate/water microemulsion system and preparation of acrylate latexes by microemulsion polymerization

✍ Aixi Hu; Zhigang Yao; Xi Yu 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 315 KB 👁 2 views