Results 331 to 340 of about 940,994 (398)

Stereoregular Copolymers of Methacrylic Acid and of Methyl Methacrylate

Journal of Macromolecular Science: Part A - Chemistry, 1971
Abstract Different techniques and mechanisms of hydrolysis of isotactic, syndiotactic, and atactic PMMA are compared for over-all rates and reaction yields. A combined hydrolysis using a mixture of hydriodic and acetic acid gave the best results, and included the conservation of tacticity and size of the acid-ester copolymers obtained.
Eric Selegny, Philippe Segain
openaire   +2 more sources

Microstructure of copolymers of methyl methacrylate with ethyl methacrylate

European Polymer Journal, 1988
Abstract The reactivity ratios for the copolymerization of methyl and ethyl methacrylates were calculated by the method of Kelen and Tudos. The triad sequence distributions were then determined by means of a computer program due to Harwood. The calculated distributions agree well with those found by 13 C- 1 H-NMR spectroscopy.
G.S. Kapur, Ajaib Singh Brar, S.K. Dubey
openaire   +2 more sources

Valorization of waste biodegradable polyester for methyl methacrylate production

Nature Sustainability, 2023
Bo Sun, Jie Zhang, Maolin Wang, Shixiang Yu, Yao Xu, Shuheng Tian, Zirui Gao, Dequan Xiao, Guosheng Liu, Wu Zhou, Meng Wang, Ding Ma   +11 more
semanticscholar   +1 more source

Green Solvents for Polymerization of Methyl Methacrylate to Poly(Methyl Methacrylate)

2012
Solvents are often volatile organic compounds (VOCs) and are therefore a major environmental concern as they are able to form low-level ozone and smog. Due to the increase in environmental awareness, it is a matter of great concern for scientists to decrease the consumption of VOCs.
openaire   +2 more sources

Copolymerization of methyl methacrylate and urethane methacrylate—II

European Polymer Journal, 1992
Abstract A methacrylate monomer (MAUN) having a pendant urethane linkage was prepared by reacting tolylene diisocyanate (TDI), 2-naphthol and 2-hydroxyethyl methacrylate (HEMA). Photopolymerization in the absence of photosensitizer in the temperature range 32 to 62° was investigated using differential photocalorimetry.
Alok Kumar Tyagi, Indra K. Varma, Veena Choudhary   +2 more
openaire   +2 more sources

Ecological approach to graphene oxide reinforced poly (methyl methacrylate) nanocomposites.

ACS Applied Materials and Interfaces, 2012
Graphene oxide (GO) possesses the desirable characteristic of aqueous solution processability attributed to the oxygen-containing functional groups on the basal planes and edges of graphene.
S. Morimune, T. Nishino, T. Goto
semanticscholar   +1 more source

Hepatotoxicity by methyl methacrylate

Clinics and Research in Hepatology and Gastroenterology, 2021
Cristiano Brauner, Dvora Joveleviths, Mário Reis Álvares-da-Silva   +2 more
openaire   +2 more sources

Radical Copolymerization of Fluoroalkyl Methacrylates with Methyl Methacrylate

Russian Journal of Applied Chemistry, 2005
Lauryl peroxide initiated radical copolymerization of 1,1,3-trihydroperfluoropropyl methacrylate and 1,1,5-trihydroperfluoroamyl methacrylate with methyl methacrylate was studied. The kinetic parameters of copolymerization for these systems were determined at low degrees of conversion.
A. A. Fedoseeva, E. N. Goncharov, V. I. Mel’nichenko, A. N. Shendrik, K. I. Man’ko, O. P. Bovkunenko   +5 more
openaire   +2 more sources

Synthesis, characterization and thermal degradation of dual temperature- and pH-sensitive RAFT-made copolymers of N,N-(dimethylamino)ethyl methacrylate and methyl methacrylate

, 2013
Poly{(N,N-(dimethylamino)ethyl methacrylate]-co-(methyl methacrylate)} copolymers of various compositions were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization at 70 degrees C in N,N-dimethylformamide.
Saswati Roy, Kamal Bauri, Sunirmal Pal, Ankur Goswami, G. Madras, Priyadarsi De   +5 more
semanticscholar   +1 more source

Hydrolysis of methacrylic acid–methyl methacrylate copolymers

Journal of Polymer Science, 1959
AbstractSeveral copolymers of methacrylic acid and methyl methacrylate have been prepared with acid contents of 28.8, 50, 60, 66, 72, 83, and 86.5%; they have been hydrolyzed in acidic medium at 110°C. at different neutralization ratios r = [HA]/[A‐].
W. De Loecker, G. Smets
openaire   +2 more sources