Show simple item record

dc.contributorMuñoz Guerra, Sebastián
dc.contributor.authorOh, Sejin
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2012-06-12T11:37:23Z
dc.date.available2012-06-12T11:37:23Z
dc.date.issued2012-02
dc.identifier.urihttp://hdl.handle.net/2099.1/15336
dc.description.abstractCopoly(-alkyl γ,DL-glutamate)s containing octadecyl and dodecyl side chains in a wide range of compositions (coPAAG-18,12) were synthesized from microbial racemic poly(γ,DL-glutamic acid) (PGGA). Feed ratios of 1-octadecanol to 1-dodecanol were 100:0, 75:25, 50:50, 25:75, and 0:100. The procedure of synthesis consisted of two-steps: Poly(-ethyl γ,DL-glutamate) (PAAG-2) was prepared by esterification of PGGA and then transesterified with 1-octadecanol or/and 1-dodecanol to obtain the corresponding copolymers coPAAG-18,12 (x:y). The polyglutamates and copolyclutamates synthesized in this work were characterized by Nuclear Magnetic Resonance (1H-NMR), Fourier Transform Infrared (FTIR), Gel Permeation Chromatography (GPC) and Intrinsic Viscosity (IV). Their thermal properties were evaluated by Thermogravimetry (TGA) and Differential Scanning Calorimetry (DSC). These copolymers display the following features: a) First melting temperature (Tm 1) ( 50 oC) according to antecedents; b) Second melting temperature (Tm 2) (~100 oC) striking and without explanation; c) No melting temperature (Tm) in the case of PAAG-12; d) A Tm value in copolyesters going down with the content in dodecanol units.
dc.language.isoeng
dc.publisherUniversitat Politècnica de Catalunya
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
dc.subject.lcshPolymers
dc.titleCopoly(γ,DL-glutamate)s containing octadecyl and dodecyl side chains: Synthesis and characterization
dc.typeMaster thesis
dc.subject.lemacPolímers
dc.rights.accessRestricted access - author's decision
dc.audience.educationlevelMàster
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria Industrial de Barcelona
dc.audience.degreeMÀSTER UNIVERSITARI EN POLÍMERS I BIOPOLÍMERS (Pla 2009)


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record