New solid state polyamidation process

Kampouris, EM

dc.contributor.author	Kampouris, EM	en
dc.date.accessioned	2014-03-01T01:05:35Z
dc.date.available	2014-03-01T01:05:35Z
dc.date.issued	1976	en
dc.identifier.issn	0032-3861	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/8890
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0016949767&partnerID=40&md5=f5e934b93518d0aaa856c49c9f417006	en
dc.subject.classification	Polymer Science	en
dc.subject.other	POLYAMIDES	en
dc.title	New solid state polyamidation process	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1976	en
heal.abstract	Solid state polymerization reactions are of considerable scientific and industrial interest. In some cases nylon salts can be converted to polyamides through intermediates of lower melting point, involving a solid-melt-solid sequence which is incompatible with known solid state polyamidation processes. A new solid state polyamidation process is described for use with salts, prepolymers, or amino acids which provides good temperature control and the avoidance of agglomeration of particles. The process comprises: (a) suspension of the particles of raw material (salt, amino acid or prepolymer) in an inert solvent; (b) reaction at the boiling point of the solvent with continuous distillation and feeding of solvent; (c) reactions at higher temperatures by feeding with the correct solvent; (d) separation of the formed granules of polymer by centrifugation, and (e) washing and drying. This process was tested for the solid state polymerization of hexamethylenediammonium maleate, which polymerizes through intermediates of lower melting point, and the following factors were examined: (a) presence and amount of dispersing agents; (b) nature of inert solvent; (c) grain size of salt; (d) distillation rate; (e) the ratio of salt: inert solvent and (f) temperature and time. © 1976.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Polymer	en
dc.identifier.isi	ISI:A1976BQ86500009	en
dc.identifier.volume	17	en
dc.identifier.issue	5	en
dc.identifier.spage	409	en
dc.identifier.epage	412	en