✦ LIBER ✦

Thermal and mechanical properties of oxymethylene linked polymers

✍ Scribed by Borzacchiello, Assunta; Ambrosio, Luigi; Nicholas, Christian V; Purbrick, Malcolm D

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 92 KB
Volume: 49
Category: Article
ISSN: 0959-8103
DOI: 10.1002/(sici)1097-0126(200001)49:1<122::aid-pi318>3.0.co;2-u

No coin nor oath required. For personal study only.

✦ Synopsis

A series of novel polymers has been prepared by linking together copolymers of oxyethylene and oxypropylene with an oxymethylene link. Oxymethylene linked (OML) polymers have been made by a step polymerization reaction. Three different OML polymers have been synthesized starting from three different short chain triblock (ABA) copolymers of poly(oxyethylene) (A) and poly(oxypropylene) (B). These polymers have been characterized by gel permeation chromatography, differential scanning calorimetric analysis and Fourier transform infrared spectroscopy. The mechanical properties of the cast ®lms and the rheological properties of aqueous solutions of these new polymers have been studied. It has been observed that it is possible to modulate the thermal and mechanical properties of these polymers by changing the starting materials.

📜 SIMILAR VOLUMES

Mechanical properties of polymers contai

Mechanical properties of polymers containing fillers

✍ Zhanjun Gao; Andy H. Tsou 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 256 KB 👁 2 views

The addition of fillers can significantly change the mechanical characteristics of a material. In this paper, a general, mechanistic model is established to determine the moduli, relaxation moduli, break strengths, and break strains for polymer films containing liquid and solid micro fillers. Based

The effect of crosslinking on thermal an

The effect of crosslinking on thermal and mechanical properties of perfluorocyclobutane aromatic ether polymers

✍ Huey-Chiang Liou; Paul S. Ho; Andrew McKerrow 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 243 KB 👁 1 views

As the minimum features in semiconductor devices decrease, it is a new trend to incorporate copper and polymers with dielectric constant less than 3.0 to enhance the performance of the devices. Two fluorinated polymers, poly(biphenyl perfluorocyclobutyl ether) (BPFCB) and poly(1,1,1-triphenyl ethane

Thermal and mechanical properties of sil

Thermal and mechanical properties of silane-crosslinked poly(vinylchloride)

✍ M. Hidalgo; M. I. Beltrán; H. Reinecke; C. Mijangos 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 176 KB 👁 1 views

A comparative study has been made of the crosslinking of plasticized PVC by grafting of ␥-aminopropyltriethoxysilane (ASi) and sodium ␥-mercaptopropyltrimethoxysilane (NaMSi) during processing. The influence of type of reagent and concentration, and the rheological behavior were investigated to obta

Morphological, thermal, and mechanical p

Morphological, thermal, and mechanical properties of polypropylene/polycarbonate blend

✍ Yin Zhihui; Zhang Xiaomin; Zhang Yajie; Yin Jinghua 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 284 KB 👁 2 views

This work deals with the effect of compatibilizer on the morphological, thermal, rheological, and mechanical properties of polypropylene/polycarbonate (PP/ PC) blends. The blends, containing between 0 to 30 vol % of polycarbonate and a compatibilizer, were prepared by means of a twin-screw extruder.

Thermal and mechanical properties of ami

Thermal and mechanical properties of aminopropoxylate-cured epoxy matrices

✍ Cizravi, J. C.; Subramaniam, K.; bin Hussein, J. 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 399 KB 👁 1 views

Bisphenol A diglycidyl etherÈaminopropoxylate mixtures have been characterized with respect to their viscosities in the presence and absence of butanediol diglycidyl ether (reactive diluent), and their curing patterns have been studied at room temperature with or without 2,4,6-tris(dimethylaminometh

Thermal stability and dynamic mechanical

Thermal stability and dynamic mechanical properties of acetal copolymers

✍ Braun, D. ;Brückner, U. ;Eckardt, P. ;Hoffmockel, M. 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 83 KB 👁 1 views

By copolymerization of trioxane with 1,3-dioxacycloheptane (DOCH) or 1,3-dioxacyclooctane (DOCO) acetal copolymers were synthesized with comonomer units which, in contrast to customary 1,3dioxolane/trioxane copolymers, consist of sequences with four or five methylene groups, respectively. In compari