The investigations presented were aimed at a description of the structure of the adsorbed layers of polyethylene glycol (PEG) on the surface of Al2O3. This was obtained from measurements of the adsorption heat of PEG macromolecules as well as of 1,2-dimethoxyethane (C4H10O2) and ...
Molecular Structure of PE How is PE made? Polyethylene is made from the polymerization of ethylene (or ethene) monomer. The PE chains are produced by addition or radical polymerization. The possible synthesis methods are: Ziegler-Natta Polymerization and ...
Polyrotaxane (PR) is a supramolecular assembly in which ring molecules are threaded onto an axial polymer chain. This paper reviews the molecular structure and dynamics of a PR composed of polyethylene glycol (PEG) and α-cyclodextrin (CD) based on data
In the polyesters of ethylene glycol with dibasic acids, [-O-(CH2)s-O-CO-(CH2)y-CO-]n, the shortening of the observed fiber period from the calculated one based on the fully extended form is about 0.5A for polyethylene adipate (y = 4), suberate (y = 6), 9 and sebacate (y = ...
Polytetrahydrofuran polyethylene glycol (TPEG) is a blockco-polymerofpoly 1,4Butanediol and polyethylene glycol (PEG). daccess-ods.un.org daccess-ods.un.org 聚四氢呋喃聚乙烯甘醇(TPEG)聚 1,4-丁二醇和聚乙烯甘醇(PEG)的块 状共聚物。
In this article results on the influence of drawing on the optical and structure properties of polyester (polyethylene terephthalate) and copolyester (glycol-modified polyethylene terephthalate) (4 wt% of ethylene glycol) fibers are reported. Refractive indices, intrinsic birefringence, mean polarizability...
II. Helical parameters of infinite polymer chains as functions of bond lengths, bond angles, and internal rotation angles polyisobutylene, polypeptides (α helix, parallel-chain, or antiparallel-chain extended form), polyglycine II, polyethylene glycol, and syndiotactic polypropylene were calculated and ...
-polyethylene聚乙烯 alkyne炔烃 A molecule containing one or more carbon-carbon triple bonds. Also a functional group. -acetylene/ethyne乙炔 -[methyl acetylene]/propyne甲基乙炔/丙炔 aromatics/arenes芳香族化合物/芳烃 consist of rings containing alternatiing double bonds ...
1. In a sheet-like structure of polyurethane, which is capable of absorbing water vapor and transmitting water vapor, with a uniformly incorporated additive, the improvement comprising that said additive is composed of solid particles of at least one modified starch ether or cellulose ether, whic...
nanoparticle localization can be observed. Similarly, in another study, Seta et al. developed nano micelles MPEG-PCL-Tat for intranasal administration using a cell-penetrating peptide (Tat), who is derived from HIV, to modify nano micelles, which were comprised of polyethylene glycol-polycaprolactone...