نتایج جستجو برای: vinyl ether
تعداد نتایج: 32801 فیلتر نتایج به سال:
Abstract We report a novel method to synthesize degradable poly(vinyl ether)s with cleavable thioacetal bonds periodically arranged in the main chains using controlled cationic copolymerization of vinyl ethers 7‐membered cyclic ( 7‐CTA ) via degenerative chain transfer (DT) internal bonds. The bonds, which are introduced into by ring‐opening ethers, serve as in‐chain dormant species allow homog...
The chemical modifications of poly (vinyl chloride) with aliphatic and aromatic alcohols compounds have been investigated at room temperature and atmospheric pressure, catalysed by a new green basic catalyst, the Maghnite-K. The presence of ether groups in the products is proven by infra red spectroscopy (IR) as well as by nuclear magnetic resonance spectroscopy (1H NMR), and characterized by i...
In this work, we report separator membranes from crosslinking of two polymers, such as poly vinyl alcohol (PVA) with an ionic polymer poly(methyl vinyl ether-alt-maleic anhydride) (PMVE-MA). Such interpolymer-networked systems were extensively used for biomedical and desalination applications but they were not examined for their potential use as membranes or separators for batteries. Therefore,...
Z. Naturforsch. 55 a, 481^185 (2000); received February 9, 2000 We have performed an investigation of the internal rotation of the methyl group in trans-cis ethyl vinyl ether by using molecular beam-Fourier transform Microwave (MB-FTMW) spectroscopy. Rotational spectra (up to J = 20) were recorded in the frequency region 4 -19 GHz. Due to the internal rotation of the methyl group, some rotation...
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