Reactions of Thrombresistant Multilayered Thin Films on Poly(vinyl chloride) (PVC) Surfaces: A Spectroscopic Study

These studies focus on the formation of multilayered thrombresistant thin films containing poly(ethylenimine) (PEI), dextran sulfate (DS), and heparin (HP), deposited on poly(vinyl chloride) surfaces. Dipping and spin-coating are employed to deposit multilayers, and using attenuated total reflectanc...

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Veröffentlicht in:	Langmuir 1998-12, Vol.14 (25), p.7235-7244
Hauptverfasser:	Kim, H, Urban, M. W
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical chemistry Biological and medical sciences Chemistry Exact sciences and technology General, instrumentation Medical sciences Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects) Technology. Biomaterials. Equipments. Material. Instrumentation
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creator	Kim, H Urban, M. W
description	These studies focus on the formation of multilayered thrombresistant thin films containing poly(ethylenimine) (PEI), dextran sulfate (DS), and heparin (HP), deposited on poly(vinyl chloride) surfaces. Dipping and spin-coating are employed to deposit multilayers, and using attenuated total reflectance Fourier transform infrared (ATR FT-IR) spectroscopy, the effects of pH, concentration of surface reacting species, and cross-linking conditions on the formation of multilayered structures are investigated. Quantitative ATR FT-IR analysis reveals that, when thin films are deposited by dipping, HP is immobilized to form covalent −CH2NH− linkages between PEI-NH2, and terminal HP-CHO groups. However, when spin-coating is utilized as an application method, HP takes a parallel orientation, and ionic complexes between PEI-NH3 +(OH-) and HP-SO3 -(H3O+) are formed. Quantitative analysis indicates that the surface concentration of individual layers is significantly lower for spin-coated layers.
doi_str_mv	10.1021/la980006q
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However, when spin-coating is utilized as an application method, HP takes a parallel orientation, and ionic complexes between PEI-NH3 +(OH-) and HP-SO3 -(H3O+) are formed. Quantitative analysis indicates that the surface concentration of individual layers is significantly lower for spin-coated layers.</description><subject>Analytical chemistry</subject><subject>Biological and medical sciences</subject><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>General, instrumentation</subject><subject>Medical sciences</subject><subject>Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)</subject><subject>Technology. Biomaterials. Equipments. Material. 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W</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reactions of Thrombresistant Multilayered Thin Films on Poly(vinyl chloride) (PVC) Surfaces: A Spectroscopic Study</atitle><jtitle>Langmuir</jtitle><addtitle>Langmuir</addtitle><date>1998-12-08</date><risdate>1998</risdate><volume>14</volume><issue>25</issue><spage>7235</spage><epage>7244</epage><pages>7235-7244</pages><issn>0743-7463</issn><eissn>1520-5827</eissn><coden>LANGD5</coden><abstract>These studies focus on the formation of multilayered thrombresistant thin films containing poly(ethylenimine) (PEI), dextran sulfate (DS), and heparin (HP), deposited on poly(vinyl chloride) surfaces. Dipping and spin-coating are employed to deposit multilayers, and using attenuated total reflectance Fourier transform infrared (ATR FT-IR) spectroscopy, the effects of pH, concentration of surface reacting species, and cross-linking conditions on the formation of multilayered structures are investigated. 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subjects	Analytical chemistry Biological and medical sciences Chemistry Exact sciences and technology General, instrumentation Medical sciences Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects) Technology. Biomaterials. Equipments. Material. Instrumentation
title	Reactions of Thrombresistant Multilayered Thin Films on Poly(vinyl chloride) (PVC) Surfaces: A Spectroscopic Study
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