𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Sorption and diffusion of aldehydes and ketones through castor oil-based interpenetrating polymer networks of PU–PS

✍ Scribed by Siddaramaiah; P. Mallu

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
200 KB
Volume
67
Category
Article
ISSN
0021-8995

No coin nor oath required. For personal study only.

✦ Synopsis

Sorption and diffusion of some aldehydes and ketones into interpenetrating polymer networks (IPNs) of polyurethane-polystyrene (PU-PS) have been investigated in the temperature interval of 25-60ЊC. Transport data were found to be affected by the nature of the interacting solvent molecule rather than its size. The diffusion coefficient of ketones range from 9.2 1 10 08 to 645 1 10 08 cm 2 /s and for aldehyde from 11.5 1 10 08 to 154.5 1 10 08 cm 2 /s. For all solvents, the polymer remained intact. From the temperature dependence of sorption data, the Arrhenius activation parameter and the thermodynamic parameter, such as entropy and enthalpy for the process of equilibrium sorption, have been estimated.

📜 SIMILAR VOLUMES

Characterization of castor oil–based int
Characterization of castor oil–based interpenetrating polymer networks of PU/PS
✍ Siddaramaiah; P. Mallu; R. Somashekar 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 264 KB 👁 2 views

A series of interpenetrating polymer networks (IPNs) of polyurethane/polystyrene (PU/PS; 90/10, 75/25, 60/40, and 50/50) have been synthesized by condensation reaction of castor oil with methylene diisocyanate and styrene, employing benzoyl peroxide as initiator. Polystyrene is extracted from IPNs b

Interpenetrating polymer networks compos
Interpenetrating polymer networks composed of castor oil-based polyurethane and 2-hydroxy-4-methacryloyloxy acetophenone
✍ S. K. Das; S. Lenka 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 157 KB 👁 2 views

2-Hydroxy-4-methacryloyloxy acetophenone, a vinyl monomer, was prepared by reacting 2,4-dihydroxy acetophenone with methacryloyl chloride in presence of triethylamine in methyl ethyl ketone. The vinyl monomer was characterized by Fourier transform infrared spectra and Proton magnetic resonance spect

Polymers from renewable resources. XX. S
Polymers from renewable resources. XX. Synthesis, structure, and thermal properties of semi-interpenetrating polymer networks based on cardanol–formaldehyde-substituted aromatic compounds copolymerized resins and castor oil polyurethanes
✍ D. K. Mohapatra; D. Das; P. L. Nayak; S. Lenka 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 156 KB 👁 2 views

A large number of improved high-temperature stable semi-interpenetrating polymer networks (semi-IPNs) were synthesized by condensing copolymerized resins with castor oil-based polyurethane using ethylene glycol dimethacrylate (EGDM) as a crosslinker. The structures of these semi-IPNs were studied us