FarFaR - Pharmacy Repository
University of Belgrade, Faculty of Pharmacy
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrillic)
    • Serbian (Latin)
  • Login
View Item 
  •   FarFaR
  • Pharmacy
  • Radovi istraživača / Researchers’ publications
  • View Item
  •   FarFaR
  • Pharmacy
  • Radovi istraživača / Researchers’ publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Liquid crystals in pharmaceutical and cosmetic preparations

Tečni kristali u farmaceutskim i kozmetičkim preparatima

No Thumbnail
Authors
Vuleta, Gordana
Savić, Snežana
Milić-Aškrabić, Jela
Conference object (Published version)
Metadata
Show full item record
Abstract
Liquid crystals are physical state, gathering the features of liquids and solids, at the same time. In common property with liquids is more or less pronaunced capability of flowing, whereas, like the solids, they have arranged, crystal state. In that way, liquid crystals phase represents intermediate state of matter, also signed as mesomorphic phase, mesophase. Thermotropic and liotropic crystals could be distinguished. For the pharmaceutical application the liotropic liquid crystals are more important phase. Very polar tensids (ethoxilated fatty alcohols,..) could make hydrated micelles, and in such a condesated form they could be structured as cubic liquid crystals. When determined tensids are included into the gel formulation, a transparent and elastic tenside-gel with liquid crystals is formed. A high tenside content in form of liquid crystals, existed in these preparations, influences the skin lipids structure, improving stratum corneum permeability for mentioned substances and th...us provide better therapeutic effect. In cosmetics, liquid crystals are used with decorative purpose. For the reason of irritation caused by some colours, the cholesteric liquid crystals are particularly convenient, commonly used as colour vehicles, in nail lacquers, eye shadows and lip pencils.

Tečni kristali su agregatno stanje koje objedinjuje osobine tečnosti i čvrstih tela. Zajedničko svojstvo sa tečnostima je više ili manje izražena sposobnost proticanja, a sa čvrstim telima raspoređeno, kristalno stanje. Tako faze tečnih kristala reprezentuju međustanje, zbog čega se označavaju i kao mezofaze. Razlikuju se termotropni i liotropni tečni kristali. Za farmaciju imaju značaj uglavnom liotropni tečni kristali. Veoma polarni tenzidi (etoksilirani masni alkoholo…) mogu da stvaraju hidratisane micele koje zgusnute obrazuju strukturu kubičastog tečnog kristala. Kada se određeni tenzidi uključe u formulaciju gela, obrazuje se tečno-kristalni tenzid - gel koji je optički transparentan i elastičan. Visok sadržaj tenzida u obliku tečnih kristala u ovim preparatima utiče na strukturu lipida kože, povećava permeabilnost stratum corneum-a za lekovite supstance i obezbeđuje bolji terapijski efekat. U kozmetičkoj industriji se tečni kristali koriste uglavnom u dekorativne svrhe. Zbog iri...tacije do koje dovode neke boje, posebno su pogodni holesterolski tečni kristali, koji se koriste kao nosači boja u lakovima za nokte, senkama za oči i olovkama za usta.

Keywords:
liquid crystals / mesophase / thermotropic / liotropic / tenside - gel / tečni kristali / mezofaza / termotropni / liotropni / tenzid - gel
Source:
Arhiv za farmaciju, 2002, 52, 3, 167-177
Publisher:
  • Savez farmaceutskih udruženja Srbije, Beograd

ISSN: 0004-1963

[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_farfar_400
URI
https://farfar.pharmacy.bg.ac.rs/handle/123456789/400
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Pharmacy
TY  - CONF
AU  - Vuleta, Gordana
AU  - Savić, Snežana
AU  - Milić-Aškrabić, Jela
PY  - 2002
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/400
AB  - Liquid crystals are physical state, gathering the features of liquids and solids, at the same time. In common property with liquids is more or less pronaunced capability of flowing, whereas, like the solids, they have arranged, crystal state. In that way, liquid crystals phase represents intermediate state of matter, also signed as mesomorphic phase, mesophase. Thermotropic and liotropic crystals could be distinguished. For the pharmaceutical application the liotropic liquid crystals are more important phase. Very polar tensids (ethoxilated fatty alcohols,..) could make hydrated micelles, and in such a condesated form they could be structured as cubic liquid crystals. When determined tensids are included into the gel formulation, a transparent and elastic tenside-gel with liquid crystals is formed. A high tenside content in form of liquid crystals, existed in these preparations, influences the skin lipids structure, improving stratum corneum permeability for mentioned substances and thus provide better therapeutic effect. In cosmetics, liquid crystals are used with decorative purpose. For the reason of irritation caused by some colours, the cholesteric liquid crystals are particularly convenient, commonly used as colour vehicles, in nail lacquers, eye shadows and lip pencils.
AB  - Tečni kristali su agregatno stanje koje objedinjuje osobine tečnosti i čvrstih tela. Zajedničko svojstvo sa tečnostima je više ili manje izražena sposobnost proticanja, a sa čvrstim telima raspoređeno, kristalno stanje. Tako faze tečnih kristala reprezentuju međustanje, zbog čega se označavaju i kao mezofaze. Razlikuju se termotropni i liotropni tečni kristali. Za farmaciju imaju značaj uglavnom liotropni tečni kristali. Veoma polarni tenzidi (etoksilirani masni alkoholo…) mogu da stvaraju hidratisane micele koje zgusnute obrazuju strukturu kubičastog tečnog kristala. Kada se određeni tenzidi uključe u formulaciju gela, obrazuje se tečno-kristalni tenzid - gel koji je optički transparentan i elastičan. Visok sadržaj tenzida u obliku tečnih kristala u ovim preparatima utiče na strukturu lipida kože, povećava permeabilnost stratum corneum-a za lekovite supstance i obezbeđuje bolji terapijski efekat. U kozmetičkoj industriji se tečni kristali koriste uglavnom u dekorativne svrhe. Zbog iritacije do koje dovode neke boje, posebno su pogodni holesterolski tečni kristali, koji se koriste kao nosači boja u lakovima za nokte, senkama za oči i olovkama za usta.
PB  - Savez farmaceutskih udruženja Srbije, Beograd
C3  - Arhiv za farmaciju
T1  - Liquid crystals in pharmaceutical and cosmetic preparations
T1  - Tečni kristali u farmaceutskim i kozmetičkim preparatima
VL  - 52
IS  - 3
SP  - 167
EP  - 177
UR  - https://hdl.handle.net/21.15107/rcub_farfar_400
ER  - 
@conference{
author = "Vuleta, Gordana and Savić, Snežana and Milić-Aškrabić, Jela",
year = "2002",
abstract = "Liquid crystals are physical state, gathering the features of liquids and solids, at the same time. In common property with liquids is more or less pronaunced capability of flowing, whereas, like the solids, they have arranged, crystal state. In that way, liquid crystals phase represents intermediate state of matter, also signed as mesomorphic phase, mesophase. Thermotropic and liotropic crystals could be distinguished. For the pharmaceutical application the liotropic liquid crystals are more important phase. Very polar tensids (ethoxilated fatty alcohols,..) could make hydrated micelles, and in such a condesated form they could be structured as cubic liquid crystals. When determined tensids are included into the gel formulation, a transparent and elastic tenside-gel with liquid crystals is formed. A high tenside content in form of liquid crystals, existed in these preparations, influences the skin lipids structure, improving stratum corneum permeability for mentioned substances and thus provide better therapeutic effect. In cosmetics, liquid crystals are used with decorative purpose. For the reason of irritation caused by some colours, the cholesteric liquid crystals are particularly convenient, commonly used as colour vehicles, in nail lacquers, eye shadows and lip pencils., Tečni kristali su agregatno stanje koje objedinjuje osobine tečnosti i čvrstih tela. Zajedničko svojstvo sa tečnostima je više ili manje izražena sposobnost proticanja, a sa čvrstim telima raspoređeno, kristalno stanje. Tako faze tečnih kristala reprezentuju međustanje, zbog čega se označavaju i kao mezofaze. Razlikuju se termotropni i liotropni tečni kristali. Za farmaciju imaju značaj uglavnom liotropni tečni kristali. Veoma polarni tenzidi (etoksilirani masni alkoholo…) mogu da stvaraju hidratisane micele koje zgusnute obrazuju strukturu kubičastog tečnog kristala. Kada se određeni tenzidi uključe u formulaciju gela, obrazuje se tečno-kristalni tenzid - gel koji je optički transparentan i elastičan. Visok sadržaj tenzida u obliku tečnih kristala u ovim preparatima utiče na strukturu lipida kože, povećava permeabilnost stratum corneum-a za lekovite supstance i obezbeđuje bolji terapijski efekat. U kozmetičkoj industriji se tečni kristali koriste uglavnom u dekorativne svrhe. Zbog iritacije do koje dovode neke boje, posebno su pogodni holesterolski tečni kristali, koji se koriste kao nosači boja u lakovima za nokte, senkama za oči i olovkama za usta.",
publisher = "Savez farmaceutskih udruženja Srbije, Beograd",
journal = "Arhiv za farmaciju",
title = "Liquid crystals in pharmaceutical and cosmetic preparations, Tečni kristali u farmaceutskim i kozmetičkim preparatima",
volume = "52",
number = "3",
pages = "167-177",
url = "https://hdl.handle.net/21.15107/rcub_farfar_400"
}
Vuleta, G., Savić, S.,& Milić-Aškrabić, J.. (2002). Liquid crystals in pharmaceutical and cosmetic preparations. in Arhiv za farmaciju
Savez farmaceutskih udruženja Srbije, Beograd., 52(3), 167-177.
https://hdl.handle.net/21.15107/rcub_farfar_400
Vuleta G, Savić S, Milić-Aškrabić J. Liquid crystals in pharmaceutical and cosmetic preparations. in Arhiv za farmaciju. 2002;52(3):167-177.
https://hdl.handle.net/21.15107/rcub_farfar_400 .
Vuleta, Gordana, Savić, Snežana, Milić-Aškrabić, Jela, "Liquid crystals in pharmaceutical and cosmetic preparations" in Arhiv za farmaciju, 52, no. 3 (2002):167-177,
https://hdl.handle.net/21.15107/rcub_farfar_400 .

DSpace software copyright © 2002-2015  DuraSpace
About FarFaR - Pharmacy Repository | Send Feedback

OpenAIRERCUB
 

 

All of DSpaceCommunitiesAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About FarFaR - Pharmacy Repository | Send Feedback

OpenAIRERCUB