magistrsko delo
Vera Vivod (Author), Bojana Vončina (Mentor), C. Q. Yang (Co-mentor)

Abstract

V magistrski nalogi smo proučevali uporabo mešanice nenasičene bifunkcionalne karboksilne kisline (maleinska kislina) in natrijevega hidrogen fosfata I kot reagenta za doseganje polifunkcionalnosti bombažnega substrata. Preiskovali smo kemijske reakcije med maleinsko kislino (MA) in natrijevim hidrogen fosfatom I (SHP) v trdnem stanju pri povišani temperaturi, nadalje smo proučevali proces zamreženja MA in adicije SHP na dvojno C=C vez MA, ki je vezana na bombaž. Potek kemijskih reakcij mešanic MA in SHP v trdnem stanju smo proučevali z FT-Raman in ATR FT-IR spektroskopijo. Pri tem smo raziskali vliv temperature in časa segrevanja in molarnih razmerij med obema komponentama mešanice na mehanizem reakcije. Bombažni substrat smo obdelali z obdelovalnimi kopelmi, ki so vsebovale MA/SHP. Proučevali smo vpliv molarnih razmerij med obema komponentama v obdelovalni kopeli na učinkovitost apreture. Z MA/SHP sistemom obdelan celulozni tekstilni material je lahko potencialno ognjevaren in ima istočasno vrhunske lastnosti (nemečkljivost, dimenzijska stabilnost). Mehanizem estrenja MA na hidroksilne skupine celuloze in adicija SHP na C=C dvojno vez maleinske kisline smo proučevali z ATR-FT IR in Raman spektroskopijo. Vsebnost fosforja na obdelanem tekstilnem substratu smo določili z ICP atomsko emisijsko spektroskopijo. Končni rezultat zamreženja hidroksilnih skupin celuloze z MA/SHP sistemom smo ovrednotili z merjenjem kotov razgubanja. Ugotovili smo, da lahko sistem MA/SHP uporabimo kot potencialni ognjevarni reagent, saj vsebuje fosfor in istočasno lahko tako obdelanemu materialu izboljšamo nemečkljivost. Iz rezultatov raziskovalnega dela lahko zaključimo, da poteka zamreženje bombažnega celuloznega substrata tako, da se natrijev hidrogen fosfat I adicijsko veže na dvojni C=C vezi maleinskih kislin, ki so vezane na hidroksilne skupine celuloze preko esternih vezi, pri čemer pride do premreženja.

Keywords

crosslinking;unsaturated carboxylic acids;cellulose;FT-Raman spectroscopy;FT-IR spectroscopy;

Data

Language: English
Year of publishing:
Source: [Maribor
Typology: 2.09 - Master's Thesis
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: V. Vivod]
UDC: 677.21.027.62:547.857.8
COBISS: 13179670 Link will open in a new window
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Other data

Secondary language: Slovenian
Secondary title: Zamreženje celuloznih tekstilnih substratov z nenasičenimi karboksilnimi kislinami
Secondary abstract: In this research was studied the use of an unsaturated bifunctional acid (maleic acid) and a phosphorus-containing inorganic compound (sodium hydroxyphosphinite) to obtain additional functionality of cotton fabric. First reaction mechanism of maleic acid (MA) and sodium hydroxyphosphinite (SHP) was investigated in solid state at elevated temperature; further the crosslinking of MA and additional reaction of SHP on double bond of MA linked to cotton was studied Chemical reactions between MA and SHP where investigatedby using of FT-Raman and ATR FT-IR spectroscopy. The influence of time, temperature and molar ratio of MA and SHP of prepared mixtures in solid state on the reaction mechanism was investigated. MA/SHP system has potential flame retardant and durable press functions when applied to cotton cellulose. The esterification mechanism of MA to hydroxyl groups of cellulose and addition of SHP to C=C was investigated by ATR FT-IR and FT-Raman spectroscopy. The phosphorus content on treated cotton fabrics was measured by ICP atomic emission spectroscopy. The final results of MA/SHP system crosslinked to hydroxyl groups of cellulose was evaluated by WRA. It was shown that MA/SHP system could be used as potential flame retardant system because it contains phosphor; at the same time in such way treated textile material has durable press finishing properties.
Secondary keywords: zamreženje;nenasičene karboksilne kisline;celuloza;FT-Raman spektroskopija;FT-IR spektroskopija;
URN: URN:SI:UM:
Type (COBISS): Master's thesis
Thesis comment: Univ. v Mariboru, Fak. za strojništvo
Pages: XVII, 90 f.
Keywords (UDC): applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;various industries;trades and crafts;razne industrije;obrti in rokodelstva;textile industry;tekstilna industrija;vegetable hairs;semenska vlakna;mathematics;natural sciences;naravoslovne vede;matematika;chemistry;crystallography;mineralogy;kemija;organic chemistry;organska kemija;
ID: 985966