Solid state polyamidation of aliphatic diamine-aliphatic diacid salts: a generalized mechanism for the effect of polycondensation water on reaction behaviour

Papaspyrides, CD

dc.contributor.author	Papaspyrides, CD	en
dc.date.accessioned	2014-03-01T01:08:08Z
dc.date.available	2014-03-01T01:08:08Z
dc.date.issued	1990	en
dc.identifier.issn	0032-3861	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10300
dc.subject	nylon salts	en
dc.subject	solid-melt transition	en
dc.subject	solid-state polycondensation (polyamidation)	en
dc.subject	water accumulation	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Nylon Polymers--Synthesis	en
dc.subject.other	Polymerization--Condensation Reactions	en
dc.subject.other	Water	en
dc.subject.other	Nylon Salts	en
dc.subject.other	Polyamidation	en
dc.subject.other	Reaction Temperature	en
dc.subject.other	Polyamides	en
dc.title	Solid state polyamidation of aliphatic diamine-aliphatic diacid salts: a generalized mechanism for the effect of polycondensation water on reaction behaviour	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0032-3861(90)90391-B	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0032-3861(90)90391-B	en
heal.language	English	en
heal.publicationDate	1990	en
heal.abstract	Polycondensation reactions on nylon salts can be carried out in the melt or, alternatively, in the solid state. Nevertheless, in the latter case, a distinct transition to the melt state may take place, depending on the nature of the nylon salt and reaction temperature. For the particular case of the dodecamethylenediammonium adipate this phenomenon has been attributed to water accumulation within the reacting structure. In this paper, based on previously reported preliminary results, the generalization of this mechanism is attempted for other typical cases of nylon salts, namely tetra- and hexamethylenediammonium adipate, and hexa- and dodecamethylenediammonium sebacate. All these salts when polymerized in the solid state may pass through a melt or quasi-melt stage. The polymerization runs were monitored both by end groups and water determinations. The experimental data obtained support the proposed mechanism according to which the polycondensation water tends to be sorbed at the polar hydrophilic groups with next effect the disturbance of the reacting regular structure. Then the mobility of the system increases and more water can be diffused out, but the reaction temperature plays a predominant role in the overall reaction behaviour. © 1990.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Polymer	en
dc.identifier.doi	10.1016/0032-3861(90)90391-B	en
dc.identifier.isi	ISI:A1990CR37400018	en
dc.identifier.volume	31	en
dc.identifier.issue	3	en
dc.identifier.spage	490	en
dc.identifier.epage	495	en