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Pregled bibliografske jedinice broj: 1139580

Glass transition temperature of cellulose acetate mixture and poly(dimethylaminoethyl methacrylate-co-methyl metacrylate)


Blažic, Roko; Morović, Silvia; Košutić, Krešimir; Vidović, Elvira
Glass transition temperature of cellulose acetate mixture and poly(dimethylaminoethyl methacrylate-co-methyl metacrylate) // Book of abstracts of the 6th Central and Eastern European Conference on Thermal Analysis and Calorimetry (CEEC-TAC6) and 15th Mediterranean Conference on Calorimetry and Thermal Analysis (Medicta2021). / Rotaru, Andrei ; Erceg, Matko (ur.).
Split: Central and Eastern European Committee for Thermal Analysis and Calorimetry (CEEC-TAC), 2021. str. 127-127 (poster, međunarodna recenzija, sažetak, znanstveni)


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Naslov
Glass transition temperature of cellulose acetate mixture and poly(dimethylaminoethyl methacrylate-co-methyl metacrylate)

Autori
Blažic, Roko ; Morović, Silvia ; Košutić, Krešimir ; Vidović, Elvira

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts of the 6th Central and Eastern European Conference on Thermal Analysis and Calorimetry (CEEC-TAC6) and 15th Mediterranean Conference on Calorimetry and Thermal Analysis (Medicta2021). / Rotaru, Andrei ; Erceg, Matko - Split : Central and Eastern European Committee for Thermal Analysis and Calorimetry (CEEC-TAC), 2021, 127-127

Skup
6th Central and Eastern European Conference on Thermal Analysis and Calorimetry (CEEC-TAC6)and 15thMediterranean Conference on Calorimetry and Thermal Analysis (Medicta2021).

Mjesto i datum
Split, Hrvatska, 20-24.07.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cellulose acetate blend, poly(dimethylaminoethyl methacrylate) copolymer ; miscibility of polymer blend

Sažetak
Cellulose acetate (CA), a bio-based polymer, is widely used to make membranes for water treatment and gas separation. The CA has good hydrofilzity, good separation properties in desalination processes, high water fluxes. However, CA membranes are susceptible to biofouling and microbial attack. Modification of CA membranes with amphiphilic polymers such as poly(dimethylaminoethyl (PDMAEMA) copolymer can influence the antifouling properties. The miscibility of the components in the polymer blend can affect the morphology of the prepared membrane and hence the membrane properties such as pure water flux and separation. Herein, polymer blends of cellulose acetate (acetylation degree 39.8% and 43.4%) and P(methyl- methacrylate-co-dimethylaminoethyl- methacrylate) were prepared by solution blending in a wide range of compositions (25-75 mas. %). The three- component solvent acetone/dioxane/water was used to prepare the samples of cellulose diacetate (CDA) (acetylation degree 39.8 %) based polymer blends, while acetone/dioxane/methanol was used to prepare the samples of cellulose triacetate (CTA) (acetylation degree 43.4 %). These solvents are commonly used in the preparation of cellulose acetate membranes. The miscibility of CA and P(MMA-co-DMAEMA) in polymer blends was investigated by differential scanning calorimetry. Miscible polymer blends exhibit a glass transition temperature, while partially miscible and immiscible blends exhibit glass transitions of each component. Contact angle measurements were also performed with water and diiodhomethane to calculate the free energy of CA and P(MMA-co-DMAEMA). The wetting coefficient (S), parameter that indicates wetting of one component with the other, was calculated based on the surface free energy of CA and P(MMA-co-DMAEMA). Both blends, CDA and CTA based, exhibited glass transition (Tg) for both components, indicating the presence of two phases in the polymer film. The Tg of P(MMA-co-DMAEMA) increased towards higher temperatures for 21-27 °C, while the Tg of cellulose acetate changed slightly (decrease up to 2 °C). Such increase in the Tg of P(MMA-co-DMAEMA) indicates partial mixing of the components in the P(MMA-co-DMAEMA)-rich phase.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo



POVEZANOST RADA


Ustanove:
Fakultet kemijskog inženjerstva i tehnologije, Zagreb


Citiraj ovu publikaciju:

Blažic, Roko; Morović, Silvia; Košutić, Krešimir; Vidović, Elvira
Glass transition temperature of cellulose acetate mixture and poly(dimethylaminoethyl methacrylate-co-methyl metacrylate) // Book of abstracts of the 6th Central and Eastern European Conference on Thermal Analysis and Calorimetry (CEEC-TAC6) and 15th Mediterranean Conference on Calorimetry and Thermal Analysis (Medicta2021). / Rotaru, Andrei ; Erceg, Matko (ur.).
Split: Central and Eastern European Committee for Thermal Analysis and Calorimetry (CEEC-TAC), 2021. str. 127-127 (poster, međunarodna recenzija, sažetak, znanstveni)
Blažic, R., Morović, S., Košutić, K. & Vidović, E. (2021) Glass transition temperature of cellulose acetate mixture and poly(dimethylaminoethyl methacrylate-co-methyl metacrylate). U: Rotaru, A. & Erceg, M. (ur.)Book of abstracts of the 6th Central and Eastern European Conference on Thermal Analysis and Calorimetry (CEEC-TAC6) and 15th Mediterranean Conference on Calorimetry and Thermal Analysis (Medicta2021)..
@article{article, year = {2021}, pages = {127-127}, keywords = {cellulose acetate blend, poly(dimethylaminoethyl methacrylate) copolymer, miscibility of polymer blend}, title = {Glass transition temperature of cellulose acetate mixture and poly(dimethylaminoethyl methacrylate-co-methyl metacrylate)}, keyword = {cellulose acetate blend, poly(dimethylaminoethyl methacrylate) copolymer, miscibility of polymer blend}, publisher = {Central and Eastern European Committee for Thermal Analysis and Calorimetry (CEEC-TAC)}, publisherplace = {Split, Hrvatska} }
@article{article, year = {2021}, pages = {127-127}, keywords = {cellulose acetate blend, poly(dimethylaminoethyl methacrylate) copolymer, miscibility of polymer blend}, title = {Glass transition temperature of cellulose acetate mixture and poly(dimethylaminoethyl methacrylate-co-methyl metacrylate)}, keyword = {cellulose acetate blend, poly(dimethylaminoethyl methacrylate) copolymer, miscibility of polymer blend}, publisher = {Central and Eastern European Committee for Thermal Analysis and Calorimetry (CEEC-TAC)}, publisherplace = {Split, Hrvatska} }




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