𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Interpolymer association between poly(vinylpyridines) and poly(mono-n-alkyl itaconates). Effect of the n-alkyl substituent

✍ Scribed by José L. Velada; Luis C. Cesteros; Issa Katime

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
634 KB
Volume
197
Category
Article
ISSN
1022-1352

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The binary polymeric systems formed by some poly(mono‐n‐alkyl itaconates) and poly(2‐vinylpyridine) or poly(4‐vinylpyridine) are studied. Depending on the solvent, two different types of material have been synthesized. On the one hand, using methanol as common solvent, we have obtained solid polymer‐polymer complexes the composition of which is determined by the initial mixing conditions. On the other hand, pyridine avoids the complexation process, allowing to obtain a true solution of both polymers and, therefore, a solid polymer blend of known composition by solvent casting. Yields of the complexation and stoichiometries of the polymer‐polymer complexes have been analysed. In this way, a favoured composition in the range from 3:2 to 1:1 for the mole ratio (referring to repeating units) ratio poly(mono‐n‐alkyl itaconate):poly(vinylpyridine) was observed depending on the poly‐(mono‐n‐alkyl itaconate used). Differential Scanning Calorimetry and thermogravimetry have been employed to study the thermal behaviour of complexes and blends. Viscometry measurements have been performed to analyse the interactions in solution. One of the aims of this work has been to analyse the effect of the side group of the poly‐(mono‐n‐alkyl itaconate) in the mixing process as well as in the characteristics of the final products. In this way, higher complexation yields have been obtained using poly‐(mono‐n‐alkyl itoconates) with longer n‐alkyl side groups due to the additional stabilisation by solvophobic interactions. On the other hand, the poly(mono‐n‐alkyl itaconates) with longer n‐alkyl groups form polymer‐polymer complexes with a higher proportion of poly(4‐vinylpyridine), presumably due to their slower kinetics of complexation.

📜 SIMILAR VOLUMES

Swelling Kinetics of Poly(acrylamide)/Po
Swelling Kinetics of Poly(acrylamide)/Poly(mono-n-alkyl itaconates) Hydrogels
✍ Katime, I.; Velada, J. L.; Novoa, R.; Díaz de Apodaca, E.; Puig, J.; Mendizabal, 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 356 KB 👁 2 views

Hydrogels of mono-n-alkyl itaconate/N-acrylamide have been synthesised. The swelling process at three different pH values (acid, neutral and basic) has been studied. The experimental data indicate that our hydrogels follow second-order swelling kinetics. According to this, the kinetic constant, K, ,

A study of the thermal degradation of po
A study of the thermal degradation of poly(mono-n-alkyl itaconates)
✍ José L. Velada; Carlos Cesteros; Ana Madoz; Issa Katime 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 645 KB

## Abstract The thermal degradation of the first six members of poly(mono‐n‐alkyl itaconates) by thermogravimetry (TG), differential scanning calorimetry (DSC), Fourier Transform infrared (FTIR) and FTIR evolved gas analysis (FTIR‐EGA) was studied. The degradation mechanism involves cyclic anhydrid

FT-IR Study of Blends and Complexes of P
FT-IR Study of Blends and Complexes of Poly(mono n-alkyl itaconates) with Poly(N,N-dimethylacrylamide) and Poly(ethyloxazoline)
✍ Emilio Meaurio; Issa Katime 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 183 KB

## Abstract **Summary:** This paper reports an FT‐IR study of blends and complexes of poly(mono __n__‐alkyl itaconates) with poly(__N__,__N__‐dimethylacrylamide) (PDMA) and poly(ethyloxazoline) (PEOX). Strong hydrogen bonding has been found and both polybases have shown similar acceptor strengths.