6
735 HWAHAK KONGHAK Vol. 40, No. 6, December, 2002, pp. 735-740 GPS(Glycidoxypropyl Trimethoxysilane) * ** †, ** , ** * (2002 4 29 , 2002 10 16 ) Preparation of Hydrophilic Coating Film Using GPS(Glycidoxypropyl Trimethoxysilane) Jung Kook Park, Ki Chang Song * , Hyun Uk Kang ** and Sung Hyun Kim ** Department of Environmental System Engineering, **Department of Chemical Engineering, Korea University, Seoul 136-701, Korea *Department of Chemical Engineering, Konyang University, Nonsan 320-030, Korea (Received 29 April 2002; accepted 16 October 2002) - - . 15 nm (Ludox) GPS . GPS (matrix) . , . pH 2 , , . Abstract - In order to improve the anti-fogging property of polymer films, organic-inorganic hybrid coating solutions which have good hydrophilic property and transmission in the range of visible light were synthesized by the sol-gel method. The coat- ing solutions were prepared by adding glycidoxypropyl trimethoxysilane(GPS) to a colloidal silica(15 nm) suspension(Ludox). GPS as silane coupling agent forms strong bonds to the colloidal silica and surrounding polymer matrix and links two different materials together. Solutions prepared by addition of GPS at the acidic condition resulted in coatings that were less prone to cracking, while those at the basic condition caused coatings with more cracking. These resulted in better hydrophilic property and transmission in the range of visible light for the solution prepared at the acidic condition(pH 2). Compared with coatings under acidic conditions, coatings prepared at basic conditions showed worse hydrophilic property and transmission in the range of visible light. Key words: Glycidoxypropyl Trimethoxysilane, Anti-Fogging, Silane Coupling Agent, Hydrophilic, Sol-Gel Method, Organic-Inorganic 1. - [1-5]. - , , . , , [1]. , . . To whom correspondence should be addressed. E-mail: [email protected]

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Page 1: GPS(Glycidoxypropyl Trimethoxysilane) - CHERIC · 2002. 12. 30. · GPS(Glycidoxypropyl Trimethoxysilane) 737 HWAHAK KONGHAK Vol. 40, No. 6, December, 2002 ~ ó e ñ ethylene diamine

HWAHAK KONGHAK Vol. 40, No. 6, December, 2002, pp. 735-740

GPS(Glycidoxypropyl Trimethoxysilane)� ��� ��� � �� �

�������*��**���†,**

����� ������, ** ����*����� ����

(2002� 4� 29� ��, 2002� 10� 16� ��)

Preparation of Hydrophilic Coating Film Using GPS(Glycidoxypropyl Trimethoxysilane)

Jung Kook Park, Ki Chang Song*, Hyun Uk Kang** and Sung Hyun Kim†�**

Department of Environmental System Engineering, ** Department of Chemical Engineering, Korea University, Seoul 136-701, Korea*Department of Chemical Engineering, Konyang University, Nonsan 320-030, Korea

(Received 29 April 2002; accepted 16 October 2002)

� �

��� ��� �� �� �� ��� ��� �� � �� � �� ��� !" #�-�� $ %&'(

)-*+,- .�/0. %&'(� 1� 23! 15 nm 4�� ��56 7-!8 9:; '((Ludox)< #� = >#

� ?.56 GPS @��� A=BC0. 9D EFGA6 GPS" 7-!8 9:;H IJ� KLMN(matrix)6 ��� �

�< OO P� Q. R�� S T� U- 0V 5W P�X YQ�" Q.A Z[ �0. P\ =] �<U A=

^ $ %&'(,- ��� �� �< %&� 3�" %&��� _`! a� bc! d" Ke� fgh=i !" j

`, k\� l� =] �<U A=^ $ %&'(,- %&� 3�<" bc! m� fgh=i /0. n� pH 2� \

=]<U A=� ��� ��� �� � �� � �� ��� 6 j` , l� =],- A=� %&��� ��

! op qr,s, t� � �� ��� /0.

Abstract − In order to improve the anti-fogging property of polymer films, organic-inorganic hybrid coating solutions which

have good hydrophilic property and transmission in the range of visible light were synthesized by the sol-gel method. The coat-

ing solutions were prepared by adding glycidoxypropyl trimethoxysilane(GPS) to a colloidal silica(15 nm) suspension(Ludox).

GPS as silane coupling agent forms strong bonds to the colloidal silica and surrounding polymer matrix and links two different

materials together. Solutions prepared by addition of GPS at the acidic condition resulted in coatings that were less prone to

cracking, while those at the basic condition caused coatings with more cracking. These resulted in better hydrophilic property

and transmission in the range of visible light for the solution prepared at the acidic condition(pH 2). Compared with coatingsunder acidic conditions, coatings prepared at basic conditions showed worse hydrophilic property and transmission in the range

of visible light.

Key words: Glycidoxypropyl Trimethoxysilane, Anti-Fogging, Silane Coupling Agent, Hydrophilic, Sol-Gel Method, Organic-Inorganic

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" �C�� !" L�) �CV< 53�� g st "Qe %�� 3†To whom correspondence should be addressed.E-mail: [email protected]

735

Page 2: GPS(Glycidoxypropyl Trimethoxysilane) - CHERIC · 2002. 12. 30. · GPS(Glycidoxypropyl Trimethoxysilane) 737 HWAHAK KONGHAK Vol. 40, No. 6, December, 2002 ~ ó e ñ ethylene diamine

736 ������������

�d�L P�� C', (��e st� +��� S� �� �� ef

. J$�3 L�V< ��9� �.�, 38 � ��3 )L[6]. 3

h) � �� ��� �H R� J$��� �� ��>� �>UV<

��,� ����� )L. �� '�� R�  ¡�� ¢� £ ( �

. PMMA[ PC ¤� ��) !r^� st� � �� ��3 ��[

t, �� ��V< ��,3 �9�� ��> ¥ c¦8 §¨� ~L.

3� � �� ��� st� x(,V< ©� 9y[, x(, ª«� 9

: +��. (��e !7 st �� ¬fQ­ �V< �y ® ( �

L. x(, �¯� ©°� � �� $f� ± � B ²C ³´, µ¶·

³´, 5^ ¸¹º �», (¯� �6 _� +�3 e¼9: �� �°

) ½6e ¾¿�! �L. 9fÀ, �ÁU +�� �H oÃÄ x(,

� �eÅÀ �p, J� %) ²F, B UÆ) ÇÈÉ,, st� x

, r^� |} _� Ê�8 HËHÌ )L[6].

f/Íf ��� st� x(,D >�� ÎÏ J$�� Ð� ÑÒ�

b=< ¬fQ­ f>� �� ��� Ó¦ ��,� f9Q­ 9

. x(, ª« ½6e ¾¿�� ÔL. Õ��. Ö�M× 1ªØ ¤�

x(, !r^ Z. mt �,�8 ÙÚ9: x(,� KVÛ. ½6

e �°9� 3Ü�Ý ÔV[, 3. x(,3 '(9fÀ Þ� ßà)

ÇÈÉ,3 ��fá< �ÁUV< 3�9.� â� Ê�d3 �ãL.

�� äå�. x(,E ÇÈÉ,� �æ �e>ç ( �. �-I

� 93è�48 3�) x(, ª«3 �°Ä ½6�! �L. Yoshida

_� �é�8 e¾ � ê�µ 12�34ë x(, � o�78

3�9: ½68 9ìVW[7-9], Schmidt. �í>�8 e¾ � ê�

µ 12�348 3�9: IU,� K. ½68 ¾¿9ìL[10].

u ½6��. !r^ ÑÒ� IU,� î�>¹� �) $�V< ]

^ïC3 15 nm ð�� I�Jñ ;<34 ê�ò �ó(Ludox)� �

�,� e¾ DÚJñ GPS� ôe9: �-��� �H �-I� Ù,

ª«�ó� ��9ìL. GPS. äå �õ� ö! �. ÷Ú�»ñ

ORMOSIL(Organically Modified Silicate)¤3 ��� ê�ò DÚJ�

1ef 3�� � *+�8 Q]9y[, Lø �J� �æ Ù,>ù

V<ú �ë I�� ûü ,�� Éý [þÇ� ) DÚJ3L. gÿ

V<ú r^ �� [\�w ð��� �I� ÷Ú�»8 b,)L.

3h) I� ÷Ú J� { �ñ�< ���. GPS. Þ�� ßà)

x(, ÑÒ� ���� ��� ��� ���� ÑÒ� 5 �� EF

� R�9: �e � B 5 �� EF�� Ø ( �. �C � �

� ( �VW, GPS� Q]~ ��ñ �í>�. x(,ñ ê�ò ]

^ë ��ñ PET ÑÒ� n9� ËÚ>ç ( �L.

GPS monomer(R'Si(OCH3)3, R: epoxy group). Fig. 1�� £ ( �

�3 )ü� 3©� e(rHe e¼) methoxy ¼�ë Lø )ü�

epoxy ¼�8 ��) � ��< 6,�� �L. 5^. J� �H

e(rH�� ê��(Si-OH)< ~ � ê�ò ]^ë ¤� I�� st

� -OHë (�ËÚ� b,�V<ú �}�� �Û� I�JE �J�

ËÚ�� î�>¹. �®� 9W, @^. f$� amine(ethylenediamine)

mG� CD�ë *+9: Fig. 2� [þ� �ë ¤3 e�ËÚ� �H

3�� 6�� !r^e �� GPS� Ç@,� [þÇ� ~L. GPSe J

� ôe�t GPS. ���. J� l �H�f �V[, ��� �3[

�� �� 9�� ©� methoxy g�� Fig. 3�� [þ� ��ÿ

e(rH�� R'Si(OH)33 ~L. e(rH~ GPS. �(Si-OH)

8 ��9á< ê�ò ]^ st� -OH�ë (�ËÚ� b,�V<ú

ê�ò ]^� st� |}�y[, ê�ò st� |}�f �! ^��

¨� {�Ú�� ,c3 ��[ ��=< ��9� ~L. 3 ý ©� *

+ ��p�� �< C U3W, �ó� pH� ð� ��9� ~L [11-12].

3!� ��~ Ù, ª« �ó� ��ñ !r^ ÑÒ �� "/ ª«

(dip-coating)>ùV<ú x(, ÑÒ� ��9� �.�, 3 EF {

�-I� Ù, ª«�ó� pH ¡Dë ôe~ GPS� û3 ��~ !r

^ ÑÒ� x(, B e>õ �E#E ¤� J,� �$. %î� &

'�(L.

2. � �

2-1. ���� �� �� �

ª«� �) �)ó� �Á�V< ��~ silica �)ó(Ludox LS,

Aldrich Chemicals)� ��9ìL. ��� Ludox, 1ªØ, J� 1:1:1

(36.3 g : 36.3 g : 36.3 g) {� M< ÙÚ9!, g �)ó� �F>* �

*9ìL. g @ *+� ôe�. ²FD�<ú 9.52 M +Q� ���

�* {� �� ôe9: �ó� pH8 �9. ,V< ��) @, 3 �

ó� �F�� ê�m �-.�ñ GPS(Aldrich Chemicals)8 �ñ�<

ôe9! 30oC< f�. /"��� 24>* 0² �*9ìL. �*Fig. 1. Chemical structure of GPS monomer.

Fig. 2. Chemical reaction of epoxy group in GPS with diamine monomer.

Fig. 3. Hydrolysis of GPS monomer and adsorption of hydrolyzed GPSon silica particles.

���� �40� �6� 2002� 12�

Page 3: GPS(Glycidoxypropyl Trimethoxysilane) - CHERIC · 2002. 12. 30. · GPS(Glycidoxypropyl Trimethoxysilane) 737 HWAHAK KONGHAK Vol. 40, No. 6, December, 2002 ~ ó e ñ ethylene diamine

GPS(Glycidoxypropyl Trimethoxysilane) ��� ��� �� ��� �� 737

~ �ó� e��ñ ethylene diamine (Aldrich Chemicals)� �ñ�<

��~ GPSë 1:2� 1M< ôe9! *+>� ª« �ó� ��9ì

L. Ethylene diamine ôe @ 4>* 3Ç� 50 mm2100 mm ð��

OHP� polyethyleneterephthalate(PET) ÑÒ(3 M)� �F0Q< "/ ª

«(dip-coating) >¹! 80oC< f�. A�� Ç�� A� B CD

>� +Á� ÑÒ� ��9ìL. 33 �ó� pH, GPS ôe� _� *

+¡(e ��~ ÑÒ� x(, B st`,� �$. %î� ��9

ìL. 3�� ��zF� Fig. 4< [þÇãL.

2-2. �� �� � ��

ª« 4� x(, FQ8 1� �9: contact angle goniometer(model

CA-DT, Kyowa interface science Co)8 3�9: J$�� �� ��

5F9ìL. �6(8 ��9ìVW, 107 3�� ,� 8� ä%,E

ä�,� �99! :�� ;9ìL. Z) ��ñ !r^ ÑÒ �� ª

«~ ª« 4� �}�=8 �� �9: ÑÒ st� �6�8  �

5^��C(S-4300, Hitachi)� ��9: <9ìL. ��� e0 5=

� 10 kV3ãVW 100,000>ë 3,000>< ?%9: �6�8 <9

ìL. e>õ %���� ª« 4� �E#� 5F9� �9: UV-Visible

spectrometer(HP 8453 UV-vis spectrophotometer, Hewlett Packard)8 �

�9: 300 nm�� 800 nm� %�� %9: ª« 4� �E#� 5F

9ìL.

3. �� �

3-1. �� pH� �� �� ��� ��

u ½6��. st� x(, OH�e ��9: x(,� [þÇ.

silica]^8 ��ñ PET ÑÒ �� ª«, A�9: x( @E8 [þÇ

!^ )L. gh[ silica]^e ��ñ �(,� PET ÑÒE �}�f

�Vá< 3 silica]^8 PET ÑÒ �� n�Ä �}>¹� �H �ñ

�<� ê�m �-.�ñ GPS8 ��9ìL. Z) 3 �ñ�� Ç(

, B Ç@,� nD9� �9: CD�<� ethylene diamine� ��

9ìL.

GPSe colloidal silica �)ó(Ludox)� ôeA 3, �� �B�� ß

à) e(rH B {�Ú*+3 ��[� ~L. e(rH~ GPS.

colloidal silica� st� |}�y[, r^�C* {��� ,c3 �

�[ � �=< ��9� ~L. 3 ý ©� *+ ��p�� �< C

U3W, �ó� pH� ð� ��9� ~L.

�ó� pHe ª«~ ÑÒ� `,� �$. %î� &'�� �9:

Fig. 5. GPS/Silica �� r#ñ R,3 0.1, 0.2, 0.33ñ �A 9��

�� ��~ �ó� pH ¡D� �ø ÑÒ� �� � ¡D8 &'u g

�3L. C' Éý �ó� pHe n�,ñ C'(pH 1, 2, 3)e �ó�

pHe D�,, {,, �,� C'(pH 4, 5, 6, 7, 8, 9.6)�L P� ��

�� �: ª«~ ÑÒ3 �E x(,F� 1 ( �L. Z) ÑÒ� �

��3 �ó� pH� ��9. FQ. GPS� ôe�3 â� C'ñ

R=0.2, 0.33� 3e GPS� ôe�3 U� R=0.1� C'�L NO �

G� 1 ( �L. 3h) ��� �F) GPS� ôe� �A�� �ó

� pH ¡D� �ø ª«�ó Ç�� e(rH~ GPS� |}*+E �

Ú*+� �3� �ñ)L! �»~L. Fig. 5�� �ó� pHe �,ñ

C'. ª« �óÇ�� e(rH~ GPSe silica ]^ë� |}*+3

ÂC�W, g ËE x(,� -� 9. silica ]^e PET ÑÒ st�

!H� ª«��, ÑÒ st� ª«~ silica ]^� �H x(,3 I�

Ý P� �� �� �3� ~L. Fig. 6� Fig. 7�� 3,000>� >#<

rJ) ÑÒ st� ª«~ silica ]^8 <9� �H 100,000>�

!>#< rJ) ËE3L. g�� [þ� �ë ¤3 pH 2� �,�A

�� ��~ silica ]^. GPS� |}� �H *+5�L ]^ïC3

�e9ìL. *t �ó� pHe �,V< K(­ �,r��ë. �

%UV< e(rH~ GPS �C* �Ú *+3 ÂC�� PET ÑÒ�

ª« �. silica ]^e �,�A�� ª«~ ÑÒE M�9: r��

9� ª«�� 3Ê�, ÑÒ st� x(,3 I�ff �Vá< ��

�3 �f. Cî� �3� ~L[11, 12]. Z) pH 9.6� �, �A

�� *+5E *+@� ]^ïC� ¡D. *+5� silica ]^ë M

�9: y� �38 �3f �(L.

Fig. 7� R,3 0.2� �AV< ��~ @, �ó� pH8 2�� 9.6�

L�< Lû9� ¡D>� Ú,~ �ó� PET ÑÒ �� ª«9: K

�¾ ÑÒ st� �6�8 3,000>� >#< 5) SEM ËE<ú

Éý ª« st� �6�e �ó� pH� ð� ���� 1 ( �L.

�ó� pHe 2, 4� �, �A�� ��~ ÑÒ� �6�. �k3

Fig. 4. Flow chart for preparation of hybrid coating film.

Fig. 5. Change of film contact angles as a function of solution pH at dif-ferent R(GPS/silica weight fraction).

HWAHAK KONGHAK Vol. 40, No. 6, December, 2002

Page 4: GPS(Glycidoxypropyl Trimethoxysilane) - CHERIC · 2002. 12. 30. · GPS(Glycidoxypropyl Trimethoxysilane) 737 HWAHAK KONGHAK Vol. 40, No. 6, December, 2002 ~ ó e ñ ethylene diamine

738 ������������

Ó. MN) �6�8 �ñ *t, �ó� pHe 6, 8, 9.6V< {,3

[ �, �AV< ��~ ÑÒ� �6�. ð� �k3 e �. �

� 1 ( �L. 3�� �ó� pHe {,3[ �, r����. �

�� ßà) �ë ¤3 e(rH~ GPSe ^��¨�� {�Ú *+

3 ÂC�W, ê�ò st �� |}3 ��[f �. ��V< O�~

L[11, 12]. �� 3 �A�� ôe~ GPS. ê�ò ]^� st �

� |}3 ��[f P9á< ª«ÑÒ� ËÚ�� î�>¹.� QQ

3 �f P9W, ª«~ ÑÒ� A� B CD > °R9. É ��

�H �k3 °R9� ~L. *t� �ó� pHe n�,ñ C'�. e

(rH~ GPS. r^�C*� {�Ú �L. ê�ò st ��� |

}3 ÂC�á<, ��ñ PET ÑÒE ê�ò ]^� �3� DTU Ë

Ú3 nD�� A�[ CD> °R9. É �� RrÄ ST �k

3 Ó. �6�8 �3� ~L[12].

�� -UV� IU�8 ª«9ì� C' ª«�� �H ª«~ Ñ

Ò� e>õ �E#3 ��f. C'e �VW, 3. +Á� ÑÒV

< ��9��. qUÚ9L. gh[ �-��� ec ¥ cd {� 9

[e �< ��,3L. 3. r���3 nm (WV< r��� �� 3

Ê� �� ��>¹f �� S� ��,� [þÇ� 3Ê3L[1].

Fig. 8� R,3 0.2ñ �A 9�� �ó� pH8 ¡D>X� 3, �

ó� pH ¡D� �ø ÑÒ� �E# ¡D8 &'u g�3L. g�

�� [þÇ. �ë ¤3 �ó� pHe 2, 4< �, �AV< ��~

C'�. ÑÒ� ��,� ª« @�Q ��f �!, ÄÛ e>

õ %���� �EQe î��ãL. *t� �ó� pHe 9.6V<

�, �A�� ��~ C'�. e>õ %�� �EQ. ª«�

f �� PET ÑÒ�LQ P� ,� �: +Á� ÑÒV< UÚ9f

��� 1 ( �L. 3. Fig. 7� SEM �¾�� [þY�3 �,

�AV< �� >�. ª« st� �k3 °R9W, 3� �H �3

Fig. 6. SEM photomicrographs of the surfaces of coatings prepared from(a) solution pH 2, (b) solution pH 9.6 with a constant amount ofGPS(R=0.2) ×100,000.

Fig. 7. SEM photomicrographs of the surfaces of coatings prepared from (a) solution pH 2, (b) solution pH 4, (c) solution pH 6, (d) solution pH 8 and (e) solu-tion pH 9.6 with a constant amount of GPS(R=0.2).

���� �40� �6� 2002� 12�

Page 5: GPS(Glycidoxypropyl Trimethoxysilane) - CHERIC · 2002. 12. 30. · GPS(Glycidoxypropyl Trimethoxysilane) 737 HWAHAK KONGHAK Vol. 40, No. 6, December, 2002 ~ ó e ñ ethylene diamine

GPS(Glycidoxypropyl Trimethoxysilane) ��� ��� �� ��� �� 739

���� 3Ê3L.

3-2. GPS ���� �� �� ��� ��

u ���. �F pH �A 9�� GPS� �� ¡De ÑÒ� J,

� �$. %î� &'�(L. Fig. 9. pH 2� �F �A 9�� GPS

� ôe û� Z� 9: ��~ �óV< ª« ~ PET ÑÒ� �� �

¡D8 &' u g�3L. GPSe 5[ ôe�f �(� C'ñ R,3

0ñ C'�. ÑÒ� �� �� 12.5o8 �3Le GPSe �� ôe~

R,3 0.1� 3. �� �� �e9: 18o8 �3� ~L. g @ m0

GPS� ôe�3 �e9� �t ÑÒ� �� �� �9: 0.5� R,

��. 4o� P� �� �� �3� ~L. 3. ÑÒ� x(,3 GPS

� ôe�� ð� ���� ��)L.

)\ Fig. 10� pH 4� �F �A 9�� GPS� ôe�� ¡D� �

ø ÑÒ� �� �� ¡D8 [þÇ! �L. GPS� ôe�3 �e®(

­ ÑÒ� �� �� �e9! ÑÒ3 J� l ]f ��� 1 ( �L.

3h) ��� GPS� û3 �eA(­ ;<34 ê�ò st� GPS

� |}3 â3 ��[ ;<34 ê�ò st� ^ ê��� ^(

e U�Ý x(,3 [_f. ��V< O�3 e¼9L.

Fig. 11� pH 2� �F �A�� GPS� ôe�� ¡D� � ��

~ ÑÒ� �6�8 3,000>� >#< <) SEM rJ ËE3L.

GPSe 5[ ôe�f �� R,3 0ñ C', ÑÒ� �6�. �k3

â3 °R9ìfÀ, GPSe ôe~ ÑÒ� �6�. �k3 °R�f

�� $`) 6�8 �: ! �L. 3h) ËE. �ó Ç��� GPS

� �®� O�H  . �V<, GPSe ôe�t ÑÒ �� ª«�� �

. ;<34 ê�ò ]^ �� |}3 ��[ ��ñ PET ÑÒE ê�

ò ]^ �3� DTU ËÚ� S!Ä Ha A� B CD zF���

ó7 �M� �°� �H �ñ�. É �� �) ÑÒ st� �k

��� $f9� ~L.

4. � �

;<34 ê�ò ]^ st�� ê� �-.�ñ GPS� |} ���

3�9: b<� �-I� Ù, ª«�ó� �-��� �H ,zUV

< Ú,9ìL. Ú,~ ª«�8 ��ñ PET ÑÒ �� "/ ª«9:

K�¾ ª« ÑÒ� x(,, st� �6� B ��,� ��9: L

�E ¤� ËB� KãL.

(1) ª« �ó3 pH 2� n�,V< ��~ C'e ª« �ó� pH

e D�,, {,, �,V< ��~ C' �L P� �� �� �: pH

2� �, �A�� ª«~ ÑÒ3 �E ¥ x(,� �ìL. ÑÒ� �

� �3 �ó� pH� ��9. FQ. GPS� ôe�3 â� C'ñ R

,3 0.2, 0.33ñ C'e U� R,ñ 0.1� C'�L NO � ¥ Cî�

�ìL.

(2) ª«~ ÑÒ st� �6�. Ú,~ �ó� pH� ð� ��9

ìL. �ó� pHe 2, 4� �, �A�� ��~ ÑÒ� �6�. �

k3 Ó. MN) �6�8 �ñ *t, �ó� pHe 6, 8, 9.6V< {

,3[ �, �AV< ��~ ÑÒ� �6�. ð� �k3 e �

. 6�8 �ìL. 3�� �ó� pHe {,3[ �, r����.

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�� |}3 ��[f �. ��V< O�~L.

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Fig. 8. Transmission of UV-Visible light on coatings prepared from dif-ferent solution pH conditions at a constant GPS amount(R=0.2)×3,000.

Fig. 9. Change of contact angles of the films prepared with differentamounts of GPS at constant pH condition(pH 2).

Fig. 10. Change of contact angles of the films prepared with differentamounts of GPS at constant pH condition(pH 4).

HWAHAK KONGHAK Vol. 40, No. 6, December, 2002

Page 6: GPS(Glycidoxypropyl Trimethoxysilane) - CHERIC · 2002. 12. 30. · GPS(Glycidoxypropyl Trimethoxysilane) 737 HWAHAK KONGHAK Vol. 40, No. 6, December, 2002 ~ ó e ñ ethylene diamine

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1. Brinker, J. C. and Scherer, G. W.: “Sol-Gel Science: The Physics and

Chemistry of Sol-Gel Processing,” Academic Press(1990).

2. Park, D. K.: Polymer Sci� and Tech�, 8, 248(1997).

3. Brinker, J. C.: J. Non-Cryst. Solids, 100, 31(1988).

4. Brinker, J. C., Keefer, K. D. and Ashley, C. S.: J. Non-Cryst. Solids,

Fig. 11. SEM photomicrographs of the surfaces of coatings prepared with pH 2 condition and added with different amounts of GPS; (a) R=0, (b)R=0.1, (c) R=0.33 and (d) R=0.5.

48, 47(1982).

5. Brinker, J. C., Keefer, K. D. and Ashley, C. S.: J. Non-Cryst. Solids,

63, 45(1984).

6. Cha, J. K.: MS. Dissertation, KAIST, Daejeon, Korea(2000).

7. Schmidt, H.: J. Sol-Gel Sci. Tech., 1, 217(1994).

8. Park, J. O.: Polymer Sci. and Tech., 8, 261(1997).

9. Noell, W. J. L., Wilkes, L. G., Mohanty, K. D. and Mcgrath, K. D.: J.

Appl. Polym. Sci., 40, 1177(1990).

10. Kasemann, R. and Schmidt, H.: New J. Chem., 18, 1117(1994).

11. Pohl, R. E. and Osterholtz, D. F.: “Molecular Characterization of Comp

ite Interfaces,” Plenum Press, New York(1985).

12. Morrow, A. B. and McFalan, S. J.: Langmuir, 7, 1695(1991).

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