TY  - JOUR
AU  - Šešlija, Sanja
AU  - Spasojević, Pavle
AU  - Panić, Vesna
AU  - Dobrzynska-Mizera, Monika
AU  - Immirzi, Barbara
AU  - Stevanović, Jasmina
AU  - Popović, Ivanka G.
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2304
AB  - Present study reports synthesis and physico-chemical evaluation of hydrophobically modified pectin derivatives, obtained by reacting of pectin with di-acyl chlorides (glutaryl and sebacoyl chloride). Depending on length of the inserted carbon chains, the acylation resulted in possible formation of mono-grafted (isolated chains) and bi-grafted (chemical gels) structures. The structural features of obtained derivatives were investigated using FTIR spectroscopy, confirming the successful synthesis. The concentrated aqueous solutions of modified pectin showed interesting rheological properties, having lower values of apparent viscosity compared to neat pectin. Since the GPC analysis indicated that no degradation occurred, the viscosity decrease was explained by more heterogeneous organization within modified pectin solutions (microparticles together with sticky polymer entanglement). A shift in particle size distribution proved that proposed modifications also affected pectin solution properties in diluted regime. The modified samples turned to be more sensible to thermal degradation than neat pectin, whereby the increasing size of flexible acyl chains attached to a polymer backbone reduced the glass transition temperature. The hydrophobicity of obtained derivatives was evaluated by sessile drop and du Nouy ring methods. It was found that acylation enhanced hydrophobicity of the pectin molecule, while hydrophobically associative character turned to be inconsistent in aqueous and non-aqueous environment.
PB  - Elsevier
T2  - International Journal of Biological Macromolecules
T1  - Physico-chemical evaluation of hydrophobically modified pectin derivatives: Step toward application
VL  - 113
SP  - 924
EP  - 932
DO  - 10.1016/j.ijbiomac.2018.03.006
ER  - 

@article{
author = "Šešlija, Sanja and Spasojević, Pavle and Panić, Vesna and Dobrzynska-Mizera, Monika and Immirzi, Barbara and Stevanović, Jasmina and Popović, Ivanka G.",
year = "2018",
abstract = "Present study reports synthesis and physico-chemical evaluation of hydrophobically modified pectin derivatives, obtained by reacting of pectin with di-acyl chlorides (glutaryl and sebacoyl chloride). Depending on length of the inserted carbon chains, the acylation resulted in possible formation of mono-grafted (isolated chains) and bi-grafted (chemical gels) structures. The structural features of obtained derivatives were investigated using FTIR spectroscopy, confirming the successful synthesis. The concentrated aqueous solutions of modified pectin showed interesting rheological properties, having lower values of apparent viscosity compared to neat pectin. Since the GPC analysis indicated that no degradation occurred, the viscosity decrease was explained by more heterogeneous organization within modified pectin solutions (microparticles together with sticky polymer entanglement). A shift in particle size distribution proved that proposed modifications also affected pectin solution properties in diluted regime. The modified samples turned to be more sensible to thermal degradation than neat pectin, whereby the increasing size of flexible acyl chains attached to a polymer backbone reduced the glass transition temperature. The hydrophobicity of obtained derivatives was evaluated by sessile drop and du Nouy ring methods. It was found that acylation enhanced hydrophobicity of the pectin molecule, while hydrophobically associative character turned to be inconsistent in aqueous and non-aqueous environment.",
publisher = "Elsevier",
journal = "International Journal of Biological Macromolecules",
title = "Physico-chemical evaluation of hydrophobically modified pectin derivatives: Step toward application",
volume = "113",
pages = "924-932",
doi = "10.1016/j.ijbiomac.2018.03.006"
}

Šešlija, S., Spasojević, P., Panić, V., Dobrzynska-Mizera, M., Immirzi, B., Stevanović, J.,& Popović, I. G.. (2018). Physico-chemical evaluation of hydrophobically modified pectin derivatives: Step toward application. in International Journal of Biological Macromolecules
Elsevier., 113, 924-932.
https://doi.org/10.1016/j.ijbiomac.2018.03.006

Šešlija S, Spasojević P, Panić V, Dobrzynska-Mizera M, Immirzi B, Stevanović J, Popović IG. Physico-chemical evaluation of hydrophobically modified pectin derivatives: Step toward application. in International Journal of Biological Macromolecules. 2018;113:924-932.
doi:10.1016/j.ijbiomac.2018.03.006 .

Šešlija, Sanja, Spasojević, Pavle, Panić, Vesna, Dobrzynska-Mizera, Monika, Immirzi, Barbara, Stevanović, Jasmina, Popović, Ivanka G., "Physico-chemical evaluation of hydrophobically modified pectin derivatives: Step toward application" in International Journal of Biological Macromolecules, 113 (2018):924-932,
https://doi.org/10.1016/j.ijbiomac.2018.03.006 . .

TY  - JOUR
AU  - Šešlija, Sanja
AU  - Spasojević, Pavle
AU  - Panić, Vesna
AU  - Dobrzynska-Mizera, Monika
AU  - Immirzi, Barbara
AU  - Stevanović, Jasmina
AU  - Popović, Ivanka G.
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4290
AB  - Present study reports synthesis and physico-chemical evaluation of hydrophobically modified pectin derivatives, obtained by reacting of pectin with di-acyl chlorides (glutaryl and sebacoyl chloride). Depending on length of the inserted carbon chains, the acylation resulted in possible formation of mono-grafted (isolated chains) and bi-grafted (chemical gels) structures. The structural features of obtained derivatives were investigated using FTIR spectroscopy, confirming the successful synthesis. The concentrated aqueous solutions of modified pectin showed interesting rheological properties, having lower values of apparent viscosity compared to neat pectin. Since the GPC analysis indicated that no degradation occurred, the viscosity decrease was explained by more heterogeneous organization within modified pectin solutions (microparticles together with sticky polymer entanglement). A shift in particle size distribution proved that proposed modifications also affected pectin solution properties in diluted regime. The modified samples turned to be more sensible to thermal degradation than neat pectin, whereby the increasing size of flexible acyl chains attached to a polymer backbone reduced the glass transition temperature. The hydrophobicity of obtained derivatives was evaluated by sessile drop and du Nouy ring methods. It was found that acylation enhanced hydrophobicity of the pectin molecule, while hydrophobically associative character turned to be inconsistent in aqueous and non-aqueous environment.
PB  - Elsevier
T2  - International Journal of Biological Macromolecules
T1  - Physico-chemical evaluation of hydrophobically modified pectin derivatives: Step toward application
VL  - 113
SP  - 924
EP  - 932
DO  - 10.1016/j.ijbiomac.2018.03.006
ER  - 

@article{
author = "Šešlija, Sanja and Spasojević, Pavle and Panić, Vesna and Dobrzynska-Mizera, Monika and Immirzi, Barbara and Stevanović, Jasmina and Popović, Ivanka G.",
year = "2018",
abstract = "Present study reports synthesis and physico-chemical evaluation of hydrophobically modified pectin derivatives, obtained by reacting of pectin with di-acyl chlorides (glutaryl and sebacoyl chloride). Depending on length of the inserted carbon chains, the acylation resulted in possible formation of mono-grafted (isolated chains) and bi-grafted (chemical gels) structures. The structural features of obtained derivatives were investigated using FTIR spectroscopy, confirming the successful synthesis. The concentrated aqueous solutions of modified pectin showed interesting rheological properties, having lower values of apparent viscosity compared to neat pectin. Since the GPC analysis indicated that no degradation occurred, the viscosity decrease was explained by more heterogeneous organization within modified pectin solutions (microparticles together with sticky polymer entanglement). A shift in particle size distribution proved that proposed modifications also affected pectin solution properties in diluted regime. The modified samples turned to be more sensible to thermal degradation than neat pectin, whereby the increasing size of flexible acyl chains attached to a polymer backbone reduced the glass transition temperature. The hydrophobicity of obtained derivatives was evaluated by sessile drop and du Nouy ring methods. It was found that acylation enhanced hydrophobicity of the pectin molecule, while hydrophobically associative character turned to be inconsistent in aqueous and non-aqueous environment.",
publisher = "Elsevier",
journal = "International Journal of Biological Macromolecules",
title = "Physico-chemical evaluation of hydrophobically modified pectin derivatives: Step toward application",
volume = "113",
pages = "924-932",
doi = "10.1016/j.ijbiomac.2018.03.006"
}

Šešlija, S., Spasojević, P., Panić, V., Dobrzynska-Mizera, M., Immirzi, B., Stevanović, J.,& Popović, I. G.. (2018). Physico-chemical evaluation of hydrophobically modified pectin derivatives: Step toward application. in International Journal of Biological Macromolecules
Elsevier., 113, 924-932.
https://doi.org/10.1016/j.ijbiomac.2018.03.006

Šešlija S, Spasojević P, Panić V, Dobrzynska-Mizera M, Immirzi B, Stevanović J, Popović IG. Physico-chemical evaluation of hydrophobically modified pectin derivatives: Step toward application. in International Journal of Biological Macromolecules. 2018;113:924-932.
doi:10.1016/j.ijbiomac.2018.03.006 .

Šešlija, Sanja, Spasojević, Pavle, Panić, Vesna, Dobrzynska-Mizera, Monika, Immirzi, Barbara, Stevanović, Jasmina, Popović, Ivanka G., "Physico-chemical evaluation of hydrophobically modified pectin derivatives: Step toward application" in International Journal of Biological Macromolecules, 113 (2018):924-932,
https://doi.org/10.1016/j.ijbiomac.2018.03.006 . .