東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Modification of polymeric substrates...

Thompson, Kimberlee Fay.

Linked to FindBook

Google Book

Amazon

博客來

Modification of polymeric substrates using surface-grafted nanoscaffolds.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Modification of polymeric substrates using surface-grafted nanoscaffolds./
Author:	Thompson, Kimberlee Fay.
Description:	172 p.
Notes:	Source: Dissertation Abstracts International, Volume: 66-07, Section: B, page: 3736.
Contained By:	Dissertation Abstracts International66-07B.
Subject:	Chemistry, Polymer. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3183263
ISBN:	9780542243806

Modification of polymeric substrates using surface-grafted nanoscaffolds.
Thompson, Kimberlee Fay.

Modification of polymeric substrates using surface-grafted nanoscaffolds. - 172 p.

Source: Dissertation Abstracts International, Volume: 66-07, Section: B, page: 3736.

Thesis (Ph.D.)--Georgia Institute of Technology, 2005.

Surface grafting and modification of poly(acrylic acid) (PAA) were performed on nylon 6,6 carpet fibers to achieve permanent stain and soil resistance. PAA was grafted to nylon and modified with 1H, 1H-pentadecafluorooctyl amine (PDFOA) using an amidation agent, 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (DMTMM). The first goal was to optimize acrylamide modification of PAA in solution. Aqueous reactions with taurine, hydroxyethyl amine, and butyl amine progressed &sim;100%, while PDFOA reactions in MeOH progressed &sim;80%. Reaction products precipitated at 77% butyl or 52% PDFOA acrylamide contents. The second goal was to optimize the PAA grafting process. First, PAA was adsorbed onto nylon 6,6 films. Next, DMTMM initiated grafting of adsorbed PAA. PAA surface coverage was &sim;78%, determined by contact angle analysis of the top 0.1--1 nm and x-ray photoelectron spectroscopy (XPS) analysis of the top 3--10 nm. The third goal was to modify PAA grafted nylon films with butyl amine and PDFOA. Randomly methylated beta-cyclodextrin (RAMEB) solubilized PDFOA in water. Contact angle detected &sim;100% surface reaction for each amine, while XPS detected &sim;77% butyl amine (H2O) and &sim;50% for PDFOA (MeOH or H2O pH = 7) reactions. In H2O pH = 12, the PDFOA reaction progressed &sim;89%, perhaps due to greater efficiency, access and solubility. The fourth goal was to perform surface depth profiling via angle-resolved XPS analysis (ARXPS). The PAA surface coverage from contact angle and XPS was confirmed. Further, adsorbed PAA was thicker than grafted PAA, supporting the theory that PAA adsorption occurs in thick layers onto nylon followed by DMTMM-activated spreading and grafting of thinner PAA layers across the surface. The PDFOA reaction in McOH produced a highly fluorinated but thin exterior and an unreacted PAA interior. The PDFOA reaction in H 2O pH = 12 produced a completely fluorinated exterior and highly fluorinated interior. Thus surface modification levels from contact angle and XPS were confirmed. The final goal was to PAA-graft and PDFOA-modify nylon 6,6 fabrics and carpets. PDFOA modification achieved significant water and oil repellency. Stainblocking was slightly improved for ionized PAA-g-nylon and greatly improved for PDFOA-modified PAA-g-nylon. However, traditional stainblockers may be necessary to completely prevent dye penetration into carpet tufts.

ISBN: 9780542243806Subjects--Topical Terms:

1018428
Chemistry, Polymer.

Modification of polymeric substrates using surface-grafted nanoscaffolds.
LDR:03353nmm 2200289 4500 001 1823530
005 20061130142514.5
008 130610s2005 eng d
020 $a 9780542243806
035 $a (UnM)AAI3183263
035 $a AAI3183263
040 $a UnM $c UnM
100 1 $a Thompson, Kimberlee Fay. $3 1912635
245 1 0 $a Modification of polymeric substrates using surface-grafted nanoscaffolds.
300 $a 172 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-07, Section: B, page: 3736.
500 $a Director: Stephen Michielsen.
502 $a Thesis (Ph.D.)--Georgia Institute of Technology, 2005.
520 $a Surface grafting and modification of poly(acrylic acid) (PAA) were performed on nylon 6,6 carpet fibers to achieve permanent stain and soil resistance. PAA was grafted to nylon and modified with 1H, 1H-pentadecafluorooctyl amine (PDFOA) using an amidation agent, 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (DMTMM). The first goal was to optimize acrylamide modification of PAA in solution. Aqueous reactions with taurine, hydroxyethyl amine, and butyl amine progressed &sim;100%, while PDFOA reactions in MeOH progressed &sim;80%. Reaction products precipitated at 77% butyl or 52% PDFOA acrylamide contents. The second goal was to optimize the PAA grafting process. First, PAA was adsorbed onto nylon 6,6 films. Next, DMTMM initiated grafting of adsorbed PAA. PAA surface coverage was &sim;78%, determined by contact angle analysis of the top 0.1--1 nm and x-ray photoelectron spectroscopy (XPS) analysis of the top 3--10 nm. The third goal was to modify PAA grafted nylon films with butyl amine and PDFOA. Randomly methylated beta-cyclodextrin (RAMEB) solubilized PDFOA in water. Contact angle detected &sim;100% surface reaction for each amine, while XPS detected &sim;77% butyl amine (H2O) and &sim;50% for PDFOA (MeOH or H2O pH = 7) reactions. In H2O pH = 12, the PDFOA reaction progressed &sim;89%, perhaps due to greater efficiency, access and solubility. The fourth goal was to perform surface depth profiling via angle-resolved XPS analysis (ARXPS). The PAA surface coverage from contact angle and XPS was confirmed. Further, adsorbed PAA was thicker than grafted PAA, supporting the theory that PAA adsorption occurs in thick layers onto nylon followed by DMTMM-activated spreading and grafting of thinner PAA layers across the surface. The PDFOA reaction in McOH produced a highly fluorinated but thin exterior and an unreacted PAA interior. The PDFOA reaction in H 2O pH = 12 produced a completely fluorinated exterior and highly fluorinated interior. Thus surface modification levels from contact angle and XPS were confirmed. The final goal was to PAA-graft and PDFOA-modify nylon 6,6 fabrics and carpets. PDFOA modification achieved significant water and oil repellency. Stainblocking was slightly improved for ionized PAA-g-nylon and greatly improved for PDFOA-modified PAA-g-nylon. However, traditional stainblockers may be necessary to completely prevent dye penetration into carpet tufts.
590 $a School code: 0078.
650 4 $a Chemistry, Polymer. $3 1018428
650 4 $a Engineering, Materials Science. $3 1017759
650 4 $a Textile Technology. $3 1020710
690 $a 0495
690 $a 0794
690 $a 0994
710 2 0 $a Georgia Institute of Technology. $3 696730
773 0 $t Dissertation Abstracts International $g 66-07B.
790 1 0 $a Michielsen, Stephen, $e advisor
790 $a 0078
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3183263