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Title:Uporaba kremenove mikrotehtnice za spremljanje adsorpcije biopolimerov
Authors:ID Doliška, Aleš (Author)
Files:.pdf Tekstilec_2011_Doliska_Uporaba_kremenove_mikrotehtnice_za_spremljanje_adsorpcije_biopolimerov.pdf (216,69 KB)
MD5: F03A7FBC5B098F15EF5CBF217BCD62D5
PID: 20.500.12556/dkum/f4ed211d-f96a-4510-8737-ea8e82c6f717
 
URL http://www.tekstilec.si/wp-content/uploads/2011/08/Uporaba-kremenove-mikrotehtnice-za-spremljanje-adsorpcije-biopolimerov.pdf
 
Language:Slovenian
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:Uporaba polimerov naravnega izvora oziroma biopolimerov se v zadnjih letih povečuje, posebno na področju biorafinerije. Najobetavnejši biopolimeri so rastlinski polisaharidi, ki so potencialni materiali tudi za hidrokoloide in nove napredne naravne materiale. Velika količina potencialno uporabnih hemiceluloz se zavrže med proizvodnjo termomehanične pulpe (TMP) z odpadnimi procesnimi vodami. Hemiceluloze iz mehkega lesa, kot je smrekovina, so bile testirane kot material za proizvodnjo biorazgradljivih filmov in hidrokoloidov. Adsorpcija in stabilnost teh adsorbiranih hemiceluloznih filmov sta pomembna dejavnika v koloidni in prehranski kemiji. Ena od tehnik, s katerimi lahko spremljamo adsorpcijo v realnem času, je kremenova mikrotehtnica (QCM-D). V našem prispevku smo uporabili kremenovo mikrotehtnico za adsorpcijo hemiceluloz iz smrekovine na modelno površino polietilentereftalata (PET). Dodana sol je povečala stopnjo adsorpcije hemiceluloz na površino PET zaradi omiljenja odbojnih sil med negativno nabito površino PET in negativnimi skupinami v hemicelulozah.
Keywords:kremenova mikrotehtnica, hemiceluloze, termomehanična pulpa, galaktoglukomanan
Publication status:Published
Publication version:Version of Record
Year of publishing:2011
Number of pages:str. 172-180
Numbering:Letn. 54, št. 7/9
PID:20.500.12556/DKUM-67866 New window
ISSN:0351-3386
UDC:676.017
ISSN on article:0351-3386
COBISS.SI-ID:15653910 New window
NUK URN:URN:SI:UM:DK:AJ82QP7O
Publication date in DKUM:01.09.2017
Views:1545
Downloads:129
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
DOLIŠKA, Aleš, 2011, Uporaba kremenove mikrotehtnice za spremljanje adsorpcije biopolimerov. Tekstilec : glasilo slovenskih tekstilcev [online]. 2011. Vol. 54, no. 7/9, p. 172–180. [Accessed 18 April 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=67866
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Record is a part of a journal

Title:Tekstilec : glasilo slovenskih tekstilcev
Shortened title:Tekstilec
Publisher:Zveza inženirjev in tehnikov tekstilcev, Splošno združenje tekstilne industrije, Zveza inženirjev in tehnikov tekstilcev, Splošno združenje tekstilne industrije, Društvo inženirjev in tehnikov tekstilcev, Univerza v Ljubljani, Naravoslovnotehniška fakulteta, Oddelek za tekstilstvo, Založba Univerze v Ljubljani
ISSN:0351-3386
COBISS.SI-ID:763396 New window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:01.09.2017

Secondary language

Language:English
Title:Use of quartz crystal microbalance (QCM) for biopolymers adsorption studies
Abstract:The importance of biomaterials has been on the increase during the last years, especially in the field of biorefineries. The most abundant biopolymers are plant polysaccharides, which are potential materials for hydrocolloids and novel advanced natural materials. During the thermomechanical pulp (TMP) production, a huge amount of hemicelluloses with a great application potential are disposed with process waters. Hemicelluloses from spruce wood were tested as the material for the production of biodegradable films and as hydrocolloids. Therefore, the adsorption process and stability of adsorbed hemicellulose films are important in the colloid and food chemistry. One of the techniques which can be used for the in situ adsorption studies is quartz crystal microbalance with dissipation unit (QCM-D). In our study, QCM-D was used for monitoring the adsorption of hemicellulose from spruce wood onto model poly(ethyleneterephtalate) (PET) surface. The added salt increased the adsorption of hemicelluloses from softwood due to the shielding of repulsive forces between the negative charges of the PET surface and negative charge groups in hemicelluloses.
Keywords:quartz crystal mikrobalance, hemicellulose, PET, thermomechanical pulp, galactoglucomanan


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