The thermorheological complexity of photoelastic behaviour of 2-hydroxyethyl methacrylate — dodecyl methacrylate copolymers

1987 ◽  
Vol 265 (12) ◽  
pp. 1046-1053 ◽  
Author(s):  
J. Hrouz ◽  
I. Havlíček ◽  
M. Ilavský
Keyword(s):  
Hydroxyethyl Methacrylate ◽  
Methacrylate Copolymers ◽  
Thermorheological Complexity ◽  
Dodecyl Methacrylate ◽  
Photoelastic Behaviour

Transport kinetics of methanol in hydroxyethyl methacrylate homopolymer and its copolymers

2004 ◽  
Vol 19 (11) ◽  
pp. 3359-3363 ◽  
Author(s):  
C-S. Tsai ◽  
Sanboh Lee ◽  
Tinh Nguyen
Keyword(s):  
Continuous Phase ◽  
Transport Processes ◽  
Hydroxyethyl Methacrylate ◽  
Nominal Thickness ◽  
Methacrylate Copolymers ◽  
Different Temperatures ◽  
Free Energy Of Mixing ◽  
D Values ◽  
Increasing Temperature ◽  
Kinetics Of

The kinetics of methanol transport in 2-hydroxyethyl methacrylate (HEMA) homopolymer and 75/25 and 50/50 mol fraction HEMA/DHPMA (2,3-dihydroxypropyl methacrylate) copolymers at five different temperatures has been investigated using the sorption experiment technique. A combined case I and case II diffusion model was used to describe the transport processes. Four replicates for each temperature of each material having a nominal thickness of 0.1 mm were immersed in methanol maintained at 35, 40, 45, 50, and 55 °C, and the mass uptake as a function of time was measured gravimetrically. Experimental results are found to be in good agreement with model prediction at all temperatures and for all three materials. Both the diffusion coefficients of case I transport and velocity of case II transport increase with increasing temperature. D values at low temperatures (35 and 40 °C), which are in the 10−9 cm2/s range, of the HEMA homopolymer are less than those of the copolymers. On the other hand, the activation energies of case I transport of the copolymers are substantially higher than those of the HEMA homopolymer; however, the level of DHPMA loading in the copolymer does not seem to affect the activation energy. In addition, thermodynamic heat and free energy of mixing values indicate heat is released when HEMA/DHPMA copolymers are exposed to methanol and that the solvent/copolymer systems exist as a continuous phase. In contrast, the methanol/HEMA homopolymer system exists as separate phases.

scholarly journals Understanding the Effect of Hydration on the Bio-inert Properties of 2-Hydroxyethyl Methacrylate Copolymers with Small Amounts of Amino- or/and Fluorine-Containing Monomers

2020 ◽  
Vol 6 (5) ◽  
pp. 2855-2866 ◽  
Author(s):  
Ryohei Koguchi ◽  
Katja Jankova ◽  
Yuki Hayasaka ◽  
Daisuke Kobayashi ◽  
Yosuke Amino ◽  
...  
Keyword(s):  
Hydroxyethyl Methacrylate ◽  
Methacrylate Copolymers

Rat peritoneal macrophage adhesion to hydroxyethyl methacrylate-ethyl methacrylate copolymers and hydroxystyrene-styrene copolymers

1985 ◽  
Vol 19 (9) ◽  
pp. 1101-1115 ◽  
Author(s):  
Anthony J. Lentz ◽  
Thomas A. Horbett ◽  
Lawrence Hsu ◽  
Buddy D. Ratner
Keyword(s):  
Peritoneal Macrophage ◽  
Hydroxyethyl Methacrylate ◽  
Ethyl Methacrylate ◽  
Styrene Copolymers ◽  
Methacrylate Copolymers ◽  
Macrophage Adhesion

Poly(2-hydroxyethyl methacrylate-co-dodecyl methacrylate-co-acrylic acid): synthesis, physico-chemical characterisation and nafcillin carrier

2010 ◽  
Vol 21 (10) ◽  
pp. 2793-2804 ◽  
Author(s):  
Teodora Zecheru ◽  
Traian Rotariu ◽  
Edina Rusen ◽  
Bogdan Mărculescu ◽  
Florin Miculescu ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Acid Synthesis ◽  
Hydroxyethyl Methacrylate ◽  
Physico Chemical ◽  
Dodecyl Methacrylate

Thermosensitive Micelles Composed of Poly(lactide)-g-Poly(NIPAM-co-HEMA) Graft Copolymers

2010 ◽  
Vol 459 ◽  
pp. 51-56 ◽  
Author(s):  
Tran Minh Quynh ◽  
Masaru Yoneyama ◽  
Yasuyuki Maki ◽  
Naotsugu Nagasawa ◽  
Toshiaki Dobashi
Keyword(s):  
Ring Opening ◽  
Graft Copolymers ◽  
Optical Transmittance ◽  
Ring Opening Polymerization ◽  
Hydroxyethyl Methacrylate ◽  
Force Microscopy ◽  
Atomic Force ◽  
Methacrylate Copolymers ◽  
Spherical Structures ◽  
Cloud Point Temperature

Different poly(N-isopropylacrylamide-co-hydroxyethyl methacrylate) copolymers (P(NIPAM-co-HEMA)) were synthesized from N-isopropylacrylamide (NIPA) and hydroxyethyl methacrylate (HEMA) comonomers by both radical and radiation polymerizations for comparison. PLLA-g-P(NIPAM-co-HEMA) graft copolymers were synthesized from L-lactide and respective P(NIPAM-co-HEMA) copolymers by ring opening polymerization. Both NMR and FTIR analyses demonstrated the PLLA chains have been grafted on to the P(NIPAM-co-HEMA) backbone. These graft copolymers revealed the cloud point temperature higher than that of PNIPAM homopolymer as determined by optical transmittance. The graft copolymers self-assembled into micelles with regularly spherical structures as observed by atomic force microscopy (AFM). The properties of these graft copolymers are interesting for the drug delivery system.

Modified hydroxyethyl methacrylate copolymers as sorbents for ion chromatography

1987 ◽  
Vol 391 ◽  
pp. 133-144 ◽  
Author(s):  
František Vláčil ◽  
Ivan Vinš
Keyword(s):  
Ion Chromatography ◽  
Hydroxyethyl Methacrylate ◽  
Methacrylate Copolymers
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