Arid
DOI10.1021/acs.biomac.8b01312
Nature-Inspired and "Water-Skating" Paper and Polyester Substrates Enabled by the Molecular Structure of Poly(gamma-stearyl-alpha,L-glutamate) Homopolypeptide
Rosu, Cornelia1,3; Jang, Yeongseon1,4; Jiang, Lu1,2; Champion, Julie1
通讯作者Rosu, Cornelia
来源期刊BIOMACROMOLECULES
ISSN1525-7797
EISSN1526-4602
出版年2018
卷号19期号:12页码:4617-4628
英文摘要

We demonstrate that the molecular structure of a synthetic homopolypeptide that resembles the leg architecture of water strider insects is effective to impart flexible polymeric surfaces with superhydrophobic behavior. Filter paper (FP) and polyester (PET) were modified with a coating consisting of low-molecular weight alpha-helical poly(gamma-stearyl-alpha,L-apglutamate) (PSLG, M-w = 4500 Da) homopolypeptide. PSLG-coated substrates displayed near to and superhydrophobic behavior (>= 150 degrees) as reflected by the contact angle values. Despite being physically adsorbed, the PSLG coating uniformly covered and was strongly adhered to the substrate surfaces. The thin coating layer displayed remarkable mechanical abrasion resistance and was insensitive to long-time exposure-to-ambient conditions.-PLSG-coated textile fibers exhibited useful and interesting properties. Under an iron-containing load, PSLG-coated PET was able to float and "walk" on water when exposed to a magnet. The PSLG coating was able to reduce the adhesion of Escherichia coli, model Gram-negative bacteria. The results indicated that the molecular geometry of PSLG homopolypeptide, which possesses a alpha-helical backbone sprouting out of highly hydrophobic stearyl side chains, was the key feature responsible for the observed behaviors. This study is relevant for a broad range of potential applications: from crop and drinking water management in arid geographic areas to biomedical devices and implants.


类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000453109200011
WOS关键词THERMOREVERSIBLE GELATION ; BACTERIAL ADHESION ; LIQUID-CRYSTALS ; SURFACES ; WALKING ; POLYPEPTIDES ; DIVERSITY ; POLYMER ; FABRICS ; ALPHA
WOS类目Biochemistry & Molecular Biology ; Chemistry, Organic ; Polymer Science
WOS研究方向Biochemistry & Molecular Biology ; Chemistry ; Polymer Science
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/208131
作者单位1.Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA;
2.Georgia Inst Technol, Renewable Bioprod Inst, Atlanta, GA 30332 USA;
3.Georgia Inst Technol, GTPN, Atlanta, GA 30332 USA;
4.Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA
推荐引用方式
GB/T 7714
Rosu, Cornelia,Jang, Yeongseon,Jiang, Lu,et al. Nature-Inspired and "Water-Skating" Paper and Polyester Substrates Enabled by the Molecular Structure of Poly(gamma-stearyl-alpha,L-glutamate) Homopolypeptide[J],2018,19(12):4617-4628.
APA Rosu, Cornelia,Jang, Yeongseon,Jiang, Lu,&Champion, Julie.(2018).Nature-Inspired and "Water-Skating" Paper and Polyester Substrates Enabled by the Molecular Structure of Poly(gamma-stearyl-alpha,L-glutamate) Homopolypeptide.BIOMACROMOLECULES,19(12),4617-4628.
MLA Rosu, Cornelia,et al."Nature-Inspired and "Water-Skating" Paper and Polyester Substrates Enabled by the Molecular Structure of Poly(gamma-stearyl-alpha,L-glutamate) Homopolypeptide".BIOMACROMOLECULES 19.12(2018):4617-4628.
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