نتایج جستجو برای: polytrimethylene terephthalate

تعداد نتایج: 7290  

Journal: :Journal of biotechnology 2005
M A M E Vertommen V A Nierstrasz M van der Veer M M C G Warmoeskerken

This study unambiguously confirms hydrolysis using cutinase of the persistent synthetic polymer poly(ethylene terephthalate), the most important synthetic fiber in the textile industry by direct measurement and identification of the different hydrolysis products. In this aqueous heterogeneous system, dissolved cutinase from Fusarium solani pisi acts on different solid poly(ethylene terephthalat...

Kambiz Tahvildari Samaneh Heidari

The Plastic Waste phenomenon, which is the result of increasing poly (ethylene terephthalate) production and the wide range PET consumption in different industries, caused one of the major environmental concerns. Therefore,many different ways have been studied and applied for chemical recycling of PET. One of the most important ways to depolymerize poly (ethylene terephthalate) is the aminolysi...

Nowadays polymer nanocomposites have introduced as a new class of food packaging materials due to their enhanced mechanical, thermal, and barrier properties. In this study PET nano composites were prepared by melt blending of poly (ethylene terephthalate) pellets and mica nanoparticles. The morphology of PET/mica nanocomposites was characterized by X-ray diffraction and transmission electron mi...

2002
R. J. Gaymans

Segmented block copolymers of polyisobutylene (PIB) and poly(butylene terephthalate) (PBT) were made by condensation polymerization of ~,og-di-anhydride telechelic PIB, with 1,4-butanediol and dimethyl terephthalate. The inherent viscosity of the polymers was between 0.35 and 2.0 dl g1. The extractability of the polymers with hexane was studied. The thermal behaviour of these polymers was studi...

2014
Ya-Ping Li Dajun Sun Julia Ming Liying Han Guan-Fang Su

The mol-ecular components of the title salt, [Cu(C4H11NO2)2](C8H4O4), are one Cu(II) cation O,N,O'-chelated by two tridentate 2-[(2-hy-droxy-eth-yl)amino]-ethanol ligands, and a terephthalate counter-dianion, located about a centre of inversion. The complex Cu(II) cation is located about a centre of inversion and shows typical Jahn-Teller distortion, with two short Cu-O and two short Cu-N bonds...

Journal: :Journal of biotechnology 2009
Anita Eberl Sonja Heumann Tina Brückner Rita Araujo Artur Cavaco-Paulo Franz Kaufmann Wolfgang Kroutil Georg M Guebitz

A lipase from Thermomyces lanuginosus and cutinases from Thermobifida fusca and Fusarium solani hydrolysed poly(ethylene terephthalate) (PET) fabrics and films and bis(benzoyloxyethyl) terephthalate (3PET) endo-wise as shown by MALDI-Tof-MS, LC-UVD/MS, cationic dyeing and XPS analysis. Due to interfacial activation of the lipase in the presence of Triton X-100, a seven-fold increase of hydrolys...

2017
Mahbod Morshedi Michael Thomas Andrew Tarzia Christian J. Doonan Nicholas G. White

The interaction of tetratopic amidinium-containing receptors with terephthalate anions leads to porous framework materials assembled through charge-assisted hydrogen bonds. The frameworks form in good yield within minutes in water at room temperature, but no framework material is obtained if other anions (Cl , Br , NO3 , SO4 2 or isophthalate ) are used in place of terephthalate. Two forms of t...

2011
Lei Yang Zhongyue Li Guanghua Li

The title compound, [Pb(4)(C(8)H(4)O(4))(3)Cl(2)](n), consists of a three-dimensional inorganic-organic hybrid framework. The asymmetric unit contains two Pb(2+) cations, one Cl(-) anion and one and a half terephthalate anions, the latter being completed by inversion symmetry. The two Pb(2+) cations are each surrounded by five O atoms and one Cl atom in the form of irregular polyhedra. The cati...

2017
Samuele Colonna Ricardo A. Pérez-Camargo Haiming Chen Guoming Liu Dujin Wang Alejandro J. Müller Guido Saracco Alberto Fina

The ring-opening polymerization of cyclic butylene terephthalate into poly(butylene terephthalate) (pCBT) in the presence of reduced graphene oxide (RGO) is an effective method for the preparation of polymer nanocomposites. The inclusion of RGO nanoflakes dramatically affects the crystallization of pCBT, shifting crystallization peak temperature to higher temperatures and, overall, increasing t...

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