ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary The morphology of di (4-methacryloxyethylene carbamate toluylen-2-carbamic) esters of oligoethylene glycols (OUM) with different molecular weight, of their network polymers and of model oligomers without methacrylic groups was studied. The supermolecular structure of oligomers is found to depend on molecular weight. Globular structure is typical for low molecular weight oligomers with Mn⪖1200. The structure of crystalline samples with M= 1600–3600 is lamellar. The latter is retained on melting. It is transformed into globular structure at a temperature much higher than the melting point. A correlation exists between the morphology of polymerizable oligomers and their network polymers. The process of network formation from oligomers is extremely complicated. Irrespective of the mechanism it is influenced by MWD, FTD, intermolecular interaction and a number of other factors. The interconnection between the morphology of polymerizable oligomers and the supermolecular structure of their crosslinked polymers has not been sufficiently studied.Information about this connection facilitates phenomenological understanding of the network formation process.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00254968
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