The Preparation Of Modified Hyperbranched Polymer And It’s Application In Silk Dyeing With Reactive Dye

Hyperbranched polymer is a kind of High Polymer Material with highly branchedmacromolecules polymer spherical structure, it shows a tempting prospects in thetextile dyeing and finishing industry because of its good performance, uniqueproperties and simple synthetic methods. There is a large number of end groups on thesurface of the Hyperbranched polymer, thus functional modification can be carriedto its end groups. Then dealing the fabric with modified hyperbranched polymer, tomake the large number of functional groups adhere to the surface of the fabric, so thatthe fabric can have certain functions, and can also improve the performance of thefabric.In this paper, surface of hyperbranched polymer containing chloromethylgroup(HBP-ECH) were synthesized by addition reaction with epoxy chloropropane(ECH) and hyperbranched poly amide-amine(HBP-NH2) as monomers. The factors ofraw material molar ratio, NaOH dosage, reaction temperature and time were observedduring the preparation of HBP-ECH, The HBP-ECH structure was characterized byFTIR and1H NMR. Then, the silk fabric was modified with HBP-ECH, investigatedhow the factors of modifier dosage, Na2CO3dosage, temperature and time influencedK/S value of the modified silk fabric dyeing performance. The modified silk fibrewere characterized through different test methods and studyed the property ofmodified silk salt-free dyeing with reactive dye. The conclusion is as follows:(1)The synthesis process condition of HBP-ECH is as follows: the molar ratio ofhyperbranched poly amide-amine to epoxy chloropropane is1:10, the molar ratio ofsodium hydrate to epoxy chloropropane is1:6, and the reaction system is supposed tokeep at30℃for4h. FTIR and1H NMR results confirm that spectral feature ofchloromethyl group on the surface of HBP-ECH.(2)The optimal modification process parameters with silk fabric by HBP-ECH isas follow: In condition of modifier HBP-ECH8g/L, Na2CO3dosage1.5g/L, temperature60℃and time60min, the Zeta potential analysis indicate that theisoelectric point of modified silk was improved; SEM analysis indicate that thesurface of modified silk was etched; Thermogravimetric analysis indicate that thermalstability of modified silk almost haven’t changed; XRD analysis indicate that thecrystallinity of modified silk was declined; Tests also show that the modified silkhygroscopicity were raised, breaking strength was slightly decreased. The silk fabricmodified by HBP-ECH was subsequently dyed with three reactive dyes (red L-S,yellow L-3R and brilliant blue L-R), the results show that the modified silk fabricpresented higher K/S value, higher color fastness and good levelness, and little impacton coloured light. Therefore, HBP-ECH modified silk fabric could realize reactivedye without salt dyeing.Then, surface of hyperbranched polymer containing quaternary ammonium salt(HBP-QAC) were synthesized by addition reaction with epoxy chloropropane (ECH),triethylamine and hyperbranched poly amide-amine(HBP-NH2) as monomers. Thefactors of raw material molar ratio, reaction temperature and time were observedduring preparation of HBP-QAC. The HBP-QAC structure was characterized byFTIR and1H NMR. Then, the silk fabric were modified with HBP-QAC, investigatedhow the factors of modifier dosage, Na2CO3dosage, temperature and time influencedK/S value of modified silk fabric dyeing performance. The modified silk fibre werecharacterized through different test methods and studyed the property of modified silksalt-free dyeing with reactive dye and its antibacterial property. The conclusion is asfollows:(1)The synthesis process condition of HBP-QAC is as follows: the molar ratio ofhyperbranched poly amide-amine to triethylamine is1:10, the molar ratio oftriethylamine to epoxy chloropropane is1:1.1, and the reaction system is supposed tokeep at60℃for4h. FTIR and1H NMR results confirm that spectral feature ofquaternary ammonium salt on the surface of HBP-QAC.(2)The optimal modification process parameters with silk fabric by HBP-QAC isas follow: In condition of modifier HBP-QAC5g/L, Na2CO3dosage1g/L, temperature50℃and time40mi, the Zeta potential analysis indicate that theisoelectric point of modified silk was improved; SEM analysis indicate that thesurface of modified silk was etched; Thermogravimetric Analysis indicate thatthermal stability of modified silk almost hadn’t changed; XRD analysis indicatedthat the crystallinity of modified silk was declined; Tests also showed that themodified silk hygroscopicity were raised, breaking strength was slightlydecreased.The silk fabric modified by HBP-QAC was subsequently dyed with threereactive dyes (red L-S, yellow L-3R and brilliant blue L-R), the results show that themodified silk fabric presented higher K/S value, higher color fastness and goodlevelness, and had a certain impact on coloured light. Therefore, HBP-QAC modifiedsilk fabric can realize reactive dye without salt dyeing.also had a certain antibacterialproperty.As a result, HBP-ECH modified silk fabric can realize reactive dye without saltdyeing and have little impact on coloured light. HBP-QAC modified silk fabric canrealize reactive dye without salt dyeing and have a certain antibacterial property.