4-amino-laurylpyridinium chloride(ALPC) was synthesized and employed in antimicrobial finishing of wool fabrics.The structures of the salt was fully characterized by using FTIR,1H-NMR and 13C-NMR analysis.The effects ...4-amino-laurylpyridinium chloride(ALPC) was synthesized and employed in antimicrobial finishing of wool fabrics.The structures of the salt was fully characterized by using FTIR,1H-NMR and 13C-NMR analysis.The effects of pH conditions of finishing baths,finishing time and temperature,and salt concentrations were investigated.ALPC could form ionic interactions with anionic groups on wool,which contribute to durable antimicrobial functions.The finished wool fabrics exhibited antimicrobial efficacy against Escherichia coli.The washing durability of antimicrobial functions on the finished wool fabrics was also studied.展开更多
Waterborne polyurethane(WPU) binder was synthesized by refined alkali lignin(RAL) with 4,4′-diphenylmethane diisocyanate(MDI).Fourier transform infrared spectroscopy(FTIR) was used to clarify the group change of raw ...Waterborne polyurethane(WPU) binder was synthesized by refined alkali lignin(RAL) with 4,4′-diphenylmethane diisocyanate(MDI).Fourier transform infrared spectroscopy(FTIR) was used to clarify the group change of raw materials-alkali lignin(AL),MDI,and product WPU,and laser particle analyzer was used to analyze the particle size of WPU.The results were as follows: AL could react with MDI to produce WPU binder.The reaction extent,the dispersion,and dispersion stability of WPU were influenced by/ratio.The WPU synthesized by AL,polyethylene glycol(PEG) and MDI was used as a binder in pigment dyeing process.In this process,the influence factors,such as binders made by different ratio of materials,the concentration of binder,curing temperature,and curing time were analyzed respectively.展开更多
During nature evolution process,living organisms have gradually adapted to the environment and been adept in synthesizing high performance structural materials at mild conditions by using fairly simple building elemen...During nature evolution process,living organisms have gradually adapted to the environment and been adept in synthesizing high performance structural materials at mild conditions by using fairly simple building elements.The skin,as the largest organ of animals,is such a representative example.Conferred by its intricate organization where collagen fibers are arranged in a randomly interwoven network,skin collagen(SC),defined as a biomass derived from skin by removing non-collagen components displays remarkable performance with combinations of mechanical properties,chemical-reactivity and biocompatibility,which far surpasses those of synthetic materials.At present,the application of SC in medical field has been largely studied,and there have been many reviews summarizing these efforts.However,the generalized view on the aspects of SC as smart materials in non-medical fields is still lacking,although SC has shown great potential in terms of its intrinsic properties and functionality.Hence,this review will provide a comprehensive summary that integrated the recent advances in SC,including its preparation method,structure,reactivity,and functionality,as well as applications,particularly in the promising area of smart materials.展开更多
文摘4-amino-laurylpyridinium chloride(ALPC) was synthesized and employed in antimicrobial finishing of wool fabrics.The structures of the salt was fully characterized by using FTIR,1H-NMR and 13C-NMR analysis.The effects of pH conditions of finishing baths,finishing time and temperature,and salt concentrations were investigated.ALPC could form ionic interactions with anionic groups on wool,which contribute to durable antimicrobial functions.The finished wool fabrics exhibited antimicrobial efficacy against Escherichia coli.The washing durability of antimicrobial functions on the finished wool fabrics was also studied.
基金Program of Introducing Talents of Discipline to Universities,China(No.111-2-04)
文摘Waterborne polyurethane(WPU) binder was synthesized by refined alkali lignin(RAL) with 4,4′-diphenylmethane diisocyanate(MDI).Fourier transform infrared spectroscopy(FTIR) was used to clarify the group change of raw materials-alkali lignin(AL),MDI,and product WPU,and laser particle analyzer was used to analyze the particle size of WPU.The results were as follows: AL could react with MDI to produce WPU binder.The reaction extent,the dispersion,and dispersion stability of WPU were influenced by/ratio.The WPU synthesized by AL,polyethylene glycol(PEG) and MDI was used as a binder in pigment dyeing process.In this process,the influence factors,such as binders made by different ratio of materials,the concentration of binder,curing temperature,and curing time were analyzed respectively.
基金National Natural Science Foundation of China(51673162)the Hong Kong General Research Fund(15201719,152098/15E)+1 种基金Research Grants Council,University Grants Committee(PolyU 5158/13E)Hong Kong PhD Fellowship(PF15–15110).
文摘During nature evolution process,living organisms have gradually adapted to the environment and been adept in synthesizing high performance structural materials at mild conditions by using fairly simple building elements.The skin,as the largest organ of animals,is such a representative example.Conferred by its intricate organization where collagen fibers are arranged in a randomly interwoven network,skin collagen(SC),defined as a biomass derived from skin by removing non-collagen components displays remarkable performance with combinations of mechanical properties,chemical-reactivity and biocompatibility,which far surpasses those of synthetic materials.At present,the application of SC in medical field has been largely studied,and there have been many reviews summarizing these efforts.However,the generalized view on the aspects of SC as smart materials in non-medical fields is still lacking,although SC has shown great potential in terms of its intrinsic properties and functionality.Hence,this review will provide a comprehensive summary that integrated the recent advances in SC,including its preparation method,structure,reactivity,and functionality,as well as applications,particularly in the promising area of smart materials.
