Recovery of poly(methyl methacrylate) by the dissolution/reprecipitation process: A model study

Papaspyrides, CD; Gouli, S; Poulakis, JG

dc.contributor.author	Papaspyrides, CD	en
dc.contributor.author	Gouli, S	en
dc.contributor.author	Poulakis, JG	en
dc.date.accessioned	2014-03-01T01:10:13Z
dc.date.available	2014-03-01T01:10:13Z
dc.date.issued	1994	en
dc.identifier.issn	0730-6679	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11336
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Dissolution	en
dc.subject.other	Distillation	en
dc.subject.other	Drying	en
dc.subject.other	Mixtures	en
dc.subject.other	Precipitation (chemical)	en
dc.subject.other	Recycling	en
dc.subject.other	Solvents	en
dc.subject.other	Toluene	en
dc.subject.other	Washing	en
dc.subject.other	Dissolution/reprecipitation process	en
dc.subject.other	n-Hexane	en
dc.subject.other	Polymethyl methacrylates	en
dc.title	Recovery of poly(methyl methacrylate) by the dissolution/reprecipitation process: A model study	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/adv.1994.060130304	en
heal.identifier.secondary	http://dx.doi.org/10.1002/adv.1994.060130304	en
heal.language	English	en
heal.publicationDate	1994	en
heal.abstract	Approaches to plastics recycling mainly include direct recovery keeping the polymer structure intact, depolymerization and then reuse of monomers, and methods involving reduction of polymer to gases and low molecular weight oils. The model process presented here belongs to the first category: It is proposed dissolution of the starting material, reprecipitation, thorough washing of the polymer obtained, and drying. With regard to the solvent mixtures involved, these are separated by distillation for further reuse. The technique is applied to poly(methyl methacrylate) (PMMA) molding compound, recycled as model starting material. The following criteria are considered: (a) precipitation of the polymer in an acceptable form; (b) maximum ''waste'' concentration; (c) maximum solution/nonsolvent volume ratio; and (d) maximum extent of poly(methyl methacrylate), solvent, and nonsolvent recovery. On the basis of these criteria, toluene/n-hexane proved to be the most satisfactory solvent/nonsolvent system. (C) 1994 John Wiley & Sons, Inc.	en
heal.publisher	Publ by John Wiley & Sons Inc, New York, NY, United States	en
heal.journalName	Advances in Polymer Technology	en
dc.identifier.doi	10.1002/adv.1994.060130304	en
dc.identifier.isi	ISI:A1994NZ98200004	en
dc.identifier.volume	13	en
dc.identifier.issue	3	en
dc.identifier.spage	213	en
dc.identifier.epage	218	en