含胺基甲酸酯之壓克力系高分子分散型液晶複合膜的製備及其光電性質研究

(1)

ؐ⋮ࡣᮬ⷇ⷁʠࣱ҇Ի₇㋧ӠઈӠᄣࠣ᚝ᇘ⢒׶⍍᱿

⢌ЈדҢ҆ヅඖ⫨ᶇἄ

1

ၪ ⣬

቏ᶇἄʙ⣬Ჿ᱿߱ᅠ࿯⤽ؐˁ҇Իד⋮ࡣᮬ⷇ⷁ₇ʠ㋧Ӡઈࡣቨʃ׺ⶪ ᅞଃ໽ഐໞʠ㋧ӠઈӠᄣ᚝ᇘ (Polymer-dispersed liquid crystal, PDLC) ⍍ヅ҆

ඖ⫨ʠഛㅨȯ቏ᶇἄ⤺࿮ᮢʪỚʃ׺⸅⸇ᕗʠᑋ⋵ⶪᅞŊ⢌̳ໞ PDLC ⍍രŊ ᛵ⸇Ңヅ҆ඖ⫨ (⬚আヅࣱ ( Vth )Ŋ㇤ُヅࣱ ( Vsat )ŊቍᅡԽヅࢍἊⲿ᪓ ( Toff )ŊᅡԽヅࢍἊⲿ᪓ ( Ton ))ȯ⃌ኞᱹ᫠ᯍቍᅡԽヅࣱᆹŊPDLC ⍍ᲀاʮ ᱺ⏨ŊᯍᅡԽヅࣱ㋧ᅠ㊪ՒヅࣱᆹŊPDLC ⍍Ἴ֯Ⱨ⩐ᣅⲿᆙᨊ๗ȯᶇἄʑໟ Ωᱹ᫠Ŋᯍ㋧ӠઈࡣቨҙヅࣱⳭӷ 1~1.5 (V) ᆹŊकԽヅࣱ֯ᣅ㊪ՒヅࣱŊ≟

ᯍ⍍ҙヅࣱⳭӷ 5~5.5 (V) ᆹŊकԽヅࣱ֯ᣅ㇤ُヅࣱȯ᮫⃌ኞㆴḻŊ቏ᶇἄ

໽⢌̳ʠ PDLC ⍍רະᮢᅠヅઈㆴḻד҆࿳ӼҀ˴ʀȯ

〦⼫⥱Řࠅ܌ԺΔ₏ഗظᎨ⢪Δሽ٠ࢤᔆΔቃፋٽढΔ෈དྷΖ

STUDY ON ELECTRO-OPTICAL PROPERTIES OF THE POLYMER-DISPERSED LIQUID CRYSTAL COMPOSITE FILMS

CONTAINING ACRYLIC AND URETHANE RESINS

Jung-Shin Wang³ Pai-Feng Tsai⁴

Key words: acrylic, urethane, electro-optical, prepolymers, liquid crystal.

๺֮壁¹

ᘕڙཬ²

ᘕࣔሒ^3* ׆ࡲᄅ³

ᓐۍ᠆⁴

Wen-Hsiang Hsu¹ʳ Yu-Chih Hsiao²ʳ Min-Da Shau^3*

1 Department of Chemical and Material Engineering

Kaohsiung, Taiwan 829, R.O.C.

2

Keelung, Taiwan 202, R.O.C.

3

Tainan, Taiwan 717, R.O.C.

4

Tainan, Taiwan 717, R.O.C.

ֱࣟݾ๬ᖂೃ֏ՠፖޗறՠ࿓ߓ ²؀᨜௧੉Օᖂሽᖲՠ࿓ߓ

3ቯতᢐ෻ઝݾՕᖂسढઝݾߓ ⁴ቯতᢐ෻ઝݾՕᖂ៭ᄐڜ٤ᓡسߓ

Tung-Fang Institute of Technology

Department of Electrical Engineering National Taiwan Ocean University

Department of Biotechnology Chia Nan University of Pharmacy and Science

Chia Nan University of Pharmacy and Science Department of Occupational Safety and Hygiene

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ABSTRACT

A new type of polymer dispersed liquid crystal (PDLC) composite film has been made by polymerization of a mixture of acrylic, urethane acrylic resins and E63. The relationship between voltage in film and threshold (or saturated) voltage on the polymer-dispersed liquid crystal composite film has been discussed in this study. Electro-optical properties of nine PDLC films obtained through photo-curing process (V_th,V_sat,T_off,T_on) were measured. It was found that the PDLC film shows opaque when uncharged. As the applied voltage became higher than the threshold voltage, the film turned clear. We also found that when applied voltage is threshold the voltage in the PDLC film being 1~1.5V outside voltage drove the electric pressure. When the voltage reached 5V, the PDLC film was saturated by voltage. The results showed that the PDLC films can be utilized in making display and optical devices.

ɺȮԊ ⤵

1985 ڣ Fergason ܓشპᓄᦖݾ๬ګפၲ࿇ࡐኪ෈དྷ

᧩قցٙΔጠ੡ NCAP (ٻ٨ীڴᒵᓳᖞઌ) ᜳᓂΖڼցٙ

ԯ࿨ٽ෈དྷࡉ೏։՗ऱᓤٽ᧯Δڂᖑڶࡐኪޗறऱױᔾ৫

֗᡹ࡳࢤΔԫ৫๯ᎁ੡ױ౨܌ࣚ෈དྷցٙംᠲհᄅޗறΖ

೏։՗։ཋ෈དྷցٙೈԱࠠڶށ᠏ڤٻ٨ী෈དྷ᧩قᕴ

(TN-LCD) ऱ᧩قࢤ౨؆Δޓࠠڶڍႈᚌរ[1,2]Ζྥۖ೏

։՗ࡐኪ෈དྷսڶԫࠄ෿᙭ڶৱ܌ࣚΔڕ೏։՗ഗޗءߪ ሽॴለ೏Δࠌ൓ຍᣊ᧩قցٙऱᦀ೯ሽᚘመ೏Δףՠ፹࿓

ګᑵ৫լജΔᖄીၦขլ࣐Δ঴ᔆլ᡹ࡳΔข঴ߜ෷܅Δ א֗ᒵՂףՠլ࣐࿛ംᠲΖؾছ፹܂೏։՗։ཋ෈དྷᓂ (PDLC) ऱֱऄՕી։੡Կጟ[3-5]Κዶຘऄ (Permeation method )ΕNCAP ऄΕઌ։ᠦऄ (Phase separation method )Δ ط࣍ዶຘऄ֗ NCAP ऄڇ፹࿓ՂհૻࠫΔࢬ౨ࠌشऱഗޗ ڶૻΔڂڼ PDLC ٠ሽᓂհ፹܂׌૞אઌ։ᠦऄ੡׌Ζۖ

ઌ։ᠦऄԾڂ੡፹܂࿓ݧհլٵΔױ։੡Կᣊ[6,7] Κᄫᕪ

֧࿇ઌ։ᠦऄ (Solvent induced phase separation , SIPS )Εᄵ ৫֧࿇ઌ։ᠦऄ (Temperature induced phase separation, TIPS)Ε֗ፋٽ֧࿇ઌ։ᠦऄ (Polymerization induced phase separation , PIPS )Ζ

ࠅ܌Ժᖫ౟ߓอ (acrylic resins)[8,9]່ൄ๯ش࣍ፋٽ

֧࿇ઌ։ᠦऄ፹܂೏։՗։ཋ෈དྷᓂΔڇ಻ֱՂࠌشࠅ܌

Ժᖫ౟ߓอΔףԵ٠ದࡨᕪ֗෈དྷΔݮګԫ݁ઌᄫ෈Δܓ ش࿫؆٠֧࿇ࠅ܌Ժᖫ౟ऱ࿏֏֘ᚨΔขسߩജ֭ᐶ෈དྷ პዠࢬᏁऱᜳᓂΔᙟထ࿏֏֘ᚨऱၞ۩Δ෈དྷऱᄫᇞ৫ດ ዬ૾܅Δۖ۞ࠅ܌Ժഗޗխ։ᠦנࠐΔ່৵אპዠݮኪ։

ཋ࣍೏։՗ഗޗխΔݮګࡐኪ෈དྷᓂΔ܀ࠅ܌Ժᖫ౟࿏֏

৵ݮګհ೏։՗ഗޗ࣐ڶ࿏ۖ౤հ౒រΖڇ Kim,B.K.ऱઔ ߒխ [10-12]Δאլٵ࿨ዌհቃፋٽढ (prepolymers) ፹܂

ऱٺጟ೏։՗։ཋ෈དྷᜳᓂΔࠀ൶ಘࠡኙሽ٠ࢤᔆհᐙ

᥼Δ࿇෼ڇ₏ഗظᎨ⢪ᖫ౟ (urethane) ऱߓอխΔ։՗࿨

ዌለਫຌऱऴᒵী౟ौගᣊࠠڶለ܅հᦀ೯ሽᚘ֗ޓݶऱ

᥼ᚨழၴΖ

ءઔߒڇᖫ౟಻ֱխ֧Եܶ₏ഗظᎨ⢪ (urethane) ᢸ

੄հࠅ܌Ժᖫ౟Δཚඨڇ፹܂ݙګհ PDCL ᓂΔޓࠠ෻უ հ٠ሽࢤᔆΖڇءઔߒխΔݺଚٍ࿇෼ԫڶᔊհ෼ွΔܛ ᓂխੌ೯ሽᚘፖᦀ೯ሽᚘ֗堷ࡉሽᚘհၴऱᣂএΖ

ʷȮ૪㊹ҙૌ

ߧ 1 PDLC ⍍कԽヅࣱ⎞૪もἊⲿヅࣱᛵ⸇ʠ⡶⇦

1. ⥶♑ד׆ᅆ

ࠅ܌Ժᖫ౟ߓอΚ⟯Ԭഗׇ෮Ꭸ⢪ (Hydroxy ethyl acrylate, HEA, Fluka)Ε1,6 աԲᔧԲׇ෮Ꭸ⢪ 1,6-Hexanediol diacrylate (HDDA, Henkel Co.)Εฆؙ؄ᔧԿׇ෮Ꭸ⢪

Pentaerythritol triacrylate (PTTRI, Fluka)Ε֗ฆؙ؄ᔧ؄ׇ

෮Ꭸ⢪ (Pentaerythritol tetraacrylate,PTTRA, Aldrich) ᝜၇

৵ܛࠌشآ٦ొ֏Ζ۞طഗದࡨᕪ HCPK (1-ස௜ഗ,ᛩաഗ

૖ظ⢩, Irgacure 184 )੡ Ciba-Geigy ֆ׹ข঴Ι෈དྷ E63 ੡ Merck Industrial Chemical ֆ׹ข঴Ιᖄሽੲᑿ (ITO) ੡ Merck Blazersֆ׹ข঴Ζ

2. UA ( Urethane acrylate ) ܈㋤ʠ׶ໞ

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3418.59 2955.14 2005.84

2360.86 1955.04

1714.93 1637.28 1619.30 1455.73

1410.72

1355.58 1463.27 2273.83

2861.77 2940.01 3677.11 T%

1456.70 1479.65 1637.33

1540.84 1682.18 2716.78 1857.05

2936.84 3319.73 O

H2C=CH-C-OCH2CH2CH O

O=C=N-CH2 (CH2) 4 CH2 –N-C-O

H2 C=CH-C-DCH2CH2 O-C=N-CH2 (CH2) 4 CH2 –N-C-OCH2 CH-O-C-HC-CH2

4000 3200 2400 1800 1400 1000 600 370

O=C=N-CH2-CH2-CH2-CH2-CH2-N=C=O a b c

d H

C=CH-C-OCH2-CH2-CH H e c b a

O

H2C=CH-C-OCH2CH2O-C-N-CH2-CH2-CH2-CH2-CH2-CH2-N-C-OCH2CH-O-C-HC=CH2 a b c c d g h

O O H H O D

h o

9 8 7 6 5 4 3 2 1 0

ᙟỄ 1 UA ʠ׶ໞⳂല

ߧ 2 HEA, HDI ד UA ʠ FT-IR

ߧ 3 HDI, HEA ד UA ʠ HNMR

࠷Բฆ⒘Ꭸ (Hexamethlene diisocyanate , HDI) ᆜԵ Կ᙭Ⴝࢍ֘ᚨ෿Δ׼࠷⟯Ԭഗׇ෮Ꭸ⢪ (Hydroxy ethyl

acrylate, HEA) ࣋Եၞறዥ֯խΔא 4 ዠ/ઞհຒ෷ףԵ֘

ᚨ෿խΔHDI ፖ HEA հ๕ۘᑇֺ੡ 1:2Δڇ 50кՀ֘ᚨ 5

՛ழΔܓشట़ࢼ௛๻ໂೈװآ֘ᚨհ֘ᚨढΔᛧ൓ػۥ

ృण UA ໢᧯Δߠੌ࿓ቹ 1Ζ 3. ᑋ⋵₇⃥ⶪᅞ⎞⦲⢌

ءઔߒආش٠ױ࿏֏ऱ acrylic and urethane acrylic ᖫ

౟ߓอΔ੡ࠌഗޗ಻ֱፖ෈དྷމ୴෷ (n⊥) ઌۿΔݺଚᓳ಻

ٺጟᖫ౟಻ֱֺࠏΔᓳ಻ޡᨏڕՀΚ

(ԫ) ലٺጟ಻ֱհᙇࡳૹၦۍ։ֺ (4/4/2, 2/6/2, 1/8/1) ෗ ٽΔ٦ףԵ 3phr ऱ٠ದᕪ HCPKΖ

(Բ) ࠷Ղ૪ޡᨏݙګհ෗ٽढא 2:8 հૹၦۍ։ֺࠏ෗Ե ףԵ E63 ෈དྷΔ࿑პףᑷࠌհ෗ٽ݁֌Ζ

4. ㋧ӠઈӠᄣ᚝ᇘ⍍᱿⢌̳

⠧ɺ ᑋ⋵ⶪᅞȮ˩⚦דᶶջരʠ༿ૼ᪓

זʳ ᇆ ಻ʳ ֱΰwt%_α _{࿏֏৵މ୴ΰ}npα PUHD 442 UA/HEA/HDDA = 4:4:2 1.516 PUHT 442 UA/HEA/PTTRI = 4:4:2 1.523 PUHTE 442 UA/HEA/PTTRA = 4:4:2 1.525 PUHD 262 UA/HEA/HDDA = 2:6:2 1.514 PUHT 262 UA/HEA/PTTRI = 2:6:2 1.517 PUHTE 262 UA/HEA/PTTRA = 2:6:2 1.519 PUHD 181 UA/HEA/HDDA = 1:8:1 1.506 PUHT 181 UA/HEA/PTTRI = 1:8:1 1.513 PUHTE 181 UA/HEA/PTTRA = 1:8:1 1.515

⠧ʷ ᚝ᇘؐ⸇ 80 wt%Ŋ⍍ׂ 25µmŊUA/HEA/HDDAȮ UA/HEA/PTTRIȮד UA/HEA/PTTRA ʠ⸅⸇ᕗ 4/4/2⢌Ј PDLC ⍍ʠ҆ヅඖ⫨

಻ֱזᇆ

٠ሽࢤᔆ PUHD 442 PUHT 442 PUHTE 442 Toff(%) 2.5 2.6 4.0 Ton(%) 42.07 44.4 37.7 ᦀ೯ሽᚘ(V) 90 155 175 堷ࡉሽᚘ(V) 250 250 250

ϦT 40.2 41.8 33.7 C.R. 17.8 17 9.4

⠧ɿ ᚝ᇘؐ⸇ 80 wt%Ŋ⍍ׂ 8µmŊUA/HEA/HDDAȮ UA/HEA/PTTRIȮד UA/HEA/PTTRA ʠ⸅⸇ᕗ 4/4/2⢌Ј PDLC ⍍ʠ҆ヅඖ⫨

಻ֱזᇆ

٠ሽࢤᔆ PUHD 442 PUHT 442 PUHTE 442

Toff(%) 9.4 12.0 13.7 Ton(%) 78.5 81.2 78.9 ᦀ೯ሽᚘ(V) 25 35 40 堷ࡉሽᚘ(V) 95 150 150 ϦT 69.1 69.2 65.2

C.R. 8.3 6.7 5.7

ല಻ړऱᖫ౟ߓอፖ෈དྷࠉᔞᅝૹၦֺףᑷ෗ٽΔݮ ګԫ݁֌ᄫ෈Δല൳ࠫদ৫ऱၴᎼᓂᆜ࣍ ITO ᖄሽੲᑿ ՂΔ࠷ᔞᅝऱ෗ٽढ࣍ၴᎼᓂխΔࠀ៿።Ղ׼ԫׂ ITO ᖄ ሽ ੲ ᑿ Δ א ९ ݠ ݈ ݈ ጹ Δ ᆜ ࣍ UV ࿏ ֏ ᖲ (UV-1000,80W/cm,1KW) խΔၞ۩٠࿏֏֘ᚨ 30 ઞΖ 5. ㋧ӠઈӠᄣ᚝ᇘ⍍᱿ヅ҆ඖ⫨ᛵ⥶

(ԫ) ઠຘ෷ፖሽᚘհྒྷၦ

ࠌشઠຘڤྒྷၦհ٠ሽᇘᆜ (UV/Vis ։٠٠৫ૠ)ΔԵ

୴٠ૡ੡ 546nmΔࠀࠌࠡԵ୴ֱٻিऴ࣍ PDLC ᜳ ᓂΔۖ؆ףሽᚘאԿشሽ।ࡉױ᧢ሽᚘᕴࠐ൳ࠫΔޢ O=C=N (CH2) 6N=C=O

HDI

H2C=CH-C-O-CH2CH2OH2

HEA O

O O H H O O

H2C=CH-C-O-CH2CH2-O-C-N (CH2) 6N-C-O-CH2CH2-O-C-CH=CH2

(4)

300

PUHD 442 PUHT 442 PUHTE 442

0 20 40 60 80 100 120 140 160 180 200 220 240 260 Voltage (V)

90 80 70 60 50 40 30 20 10 0

trnasmission (%)

0 20 40 60 80 100 120 140 160 180 200 220 240 260 Voltage (V)

90 80 70 60 50 40 30 20 10 0

trnasmission (%)

⠧߈ ᚝ᇘؐ⸇ 80wt%Ŋ⍍ׂ 25µmŊUA/HEA/HDDAȮ UA/HEA/PTTRIȮד UA/HEA/PTTRA ʠ⸅⸇ᕗ 2/6/2⢌Ј PDLC ⍍ʠ҆ヅඖ⫨

಻ֱזᇆ

٠ሽࢤᔆ PUHD 262 PUHT 262

Toff(%) 11.7 9.4 10.3 Ton(%) 56.5 28.3 34.8 ᦀ೯ሽᚘ(V) 85 130 185 堷ࡉሽᚘ(V) 250 250 250 ϦT 44.8 18.9 24.5 C.R. 4.8 3.0 3.3

⠧ʽ ᚝ᇘؐ⸇ 80wt%Ŋ⍍ׂ 8µmŊUA/HEA/HDDAȮ UA/HEA/PTTRIȮד UA/HEA/PTTRA ʠ⸅⸇ᕗ 2/6/2⢌Ј PDLC ⍍ʠ҆ヅඖ⫨

಻ֱזᇆ

٠ሽࢤᔆ PUHD 262 PUHT 262 PUHTE 262

Toff(%) 17.9 21.9 18.9 Ton(%) 81.4 82.5 82.2 ᦀ೯ሽᚘ(V) 20 55 55 堷ࡉሽᚘ(V) 85 150 150 ϦT 63.5 60.6 63.3

C.R. 4.5 3.7 4.3

⠧Ҟ ᚝ᇘؐ⸇ 80wt%Ŋ⍍ׂ 25µmŊUA/HEA/HDDAȮ UA/HEA/PTTRIȮד UA/HEA/PTTRA ʠ⸅⸇ᕗ 1/8/1⢌Ј PDLC ⍍ʠ҆ヅඖ⫨

಻ֱזᇆ ٠ሽࢤᔆ

Toff(%) 7.8 5.0 3.2 Ton(%) 53.2 50.9 62.2 ᦀ೯ሽᚘ(V) 40 100 90

堷ࡉሽᚘ(V) 170 250 250 ϦT 45.4 45.9 59

C.R. 6.8 10.18 19.4

⠧ɼ ᚝ᇘؐ⸇ 80wt%Ŋ⍍ׂ 8µmŊUA/HEA/HDDAȮ UA/HEA/PTTRIȮד UA/HEA/PTTRA ʠ⸅⸇ᕗ 1/8/1⢌Ј PDLC ⍍ʠ҆ヅඖ⫨

಻ֱזᇆ

٠ሽࢤᔆ PUHD 181 PUHT 181 PUHTE 181

Toff(%) 12.0 24.3 17.8 Ton(%) 83.9 86.0 84.2 ᦀ೯ሽᚘ(V) 15 20 25 堷ࡉሽᚘ(V) 110 100 110 ϦT 71.9 61.7 64.6 C.R. 6.9 3.5 4.7

ߧ 4 ᚝ᇘؐ⸇ 80wtŃŊ⍍ׂ 25µm ׂŊUA/HEA/

HDDAȮUA/HEA/ PTTRIȮד UA/HEA/ PTTRA ʠ⸅⸇ᕗ 4/4/2 ⢌Ј PDLC ⍍ʠ V-T ሧℬ

ߧ 5 ᚝ᇘؐ⸇ 80wtŃŊ⍍ׂ 8µm ׂŊUA/HEA/

2VᓳԫڻΖઠຘ෷ױطᏚᕴऴ൷ᦰנΔಖᙕڇլٵሽ ᚘՀऱઠຘ෷Ζ

(Բ) ᦀ೯ሽᚘ֗堷ࡉሽᚘհྒྷၦ

ྒྷ൓ڇլٵሽᚘऱઠຘ෷৵Δױܓش܂ቹޣנᦀ೯ሽ ᚘΕ堷ࡉሽᚘ֗ኙֺ৫ (contrast ratio)Ζ

6. PDLC⍍कԽヅࣱ⎞૪もἊⲿヅࣱʠᛵ⸇

ܓشሽੌࠀᜤᣂএऴ൷ྒྷၦᙁԵሽᚘΔࠀאۭᜤᑓڤ ሽੌຏመ PDLC ᓂΔᇘᆜڕቹ 1Ζ

ɿȮ⃌ኞ⎞⤽⧄

ء ઔ ߒ א ԫ ጟ ܶ ₏ ഗ ظ Ꭸ ⢪ ᢸ ੄ հ ࠅ ܌ Ժ ᖫ ౟ (Urethane acrylate , UA ) ֗Կጟܶլٵᠨ᝶ࡴ౨ഗᑇհࠅ

܌Ժߓᖫ౟Δ܂੡೏։՗։ཋ෈དྷ (PDLC) ᜳᓂհ೏։՗

ഗޗΔףԵᔞᅝֺࠏհ෈དྷΔᆖط٠࿏֏࿓ݧΔ፹܂ PDLC

ᜳᓂΔࠀ൶ಘ಻ֱհ່ᔞ֏Δ೏։՗։ཋ෈དྷᓂհሽ٠ࢤ ᔆΔ֗ᓂփੌ೯ሽᚘፖᦀ೯ሽᚘ (֗堷ࡉሽᚘ) հᣂএΖ

1. UAʠ׶ໞ⎞⃌ᐉ⿀હ

₏ഗظᎨ⢪໢᧯ (Urethane acrylate , UA) ԯط HDI (Hexamethylene diisocyanate) ֗ HEA (Hydroxy ethyl

acrylate) א๕ۘᑇ 1:2 ֘ᚨۖګΔࠡٽګຜஉڕੌ࿓ 1 ࢬ

قΖ PUHTE 262

PUHD 181 PUHT 181 PUHTE 181

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0 20 40 60 80 100 120 140 160 180 200 220 240 260 Voltage (V)

90 80 70 60 50 40 30 20 10 0

trnasmission (%)

0 20 40 60 80 100 120 140 160 180 200 220 240 260 Voltage (V)

90 80 70 60 50 40 30 20 10 0

trnasmission (%)

0 20 40 60 80 100 120 140 160 180 200 220 240 260 6.0

5.0

4.0

3.0

2.0

1.0

0.0

Output Voltage (V)

Input Voltage (V)

0 20 40 60 80 100 120 140 160 180 200 220 240 260 Input Voltage (V)

6.0

5.0

4.0

3.0

2.0 1.0

0.0

Output Voltage (V)

ߧ 6 ᚝ᇘؐ⸇ 80wtŃŊ⍍ׂ 25 µm ׂŊUA/HEA/

HDDAȮUA/HEA/PTTRIȮד UA/HEA/ PTTRA ʠ⸅⸇ᕗ 2/6/2 ⢌Ј PDLC ⍍ʠ V-T ሧℬ

ߧ 7 ᚝ᇘؐ⸇ 80 wtŃŊ⍍ׂ 8 µm ׂŊUA/HEA/

HDDAȮUA/HEA/PTTRIȮד UA/HEA/ PTTRA ʠ⸅⸇ᕗ 2/6/2 ⢌Ј PDLC ⍍ʠ V-T ሧℬ

HDDAȮUA/HEA/PTTRIȮד UA/HEA/PTTRA ʠ⸅⸇ᕗ 1/8/1 ⢌Ј PDLC ⍍ʠ V-T ሧℬ

ቹ 2 ੡֘ᚨढ HDI ֗ HEA ፖࠡขढ UA հદ؆ᒵ٠ ᢜቹΔطቹխݺଚ࿇෼֘ᚨढ HDI հ NCO ࡴ౨ഗܮگ (2274 cm^-1) ፖ֘ᚨढ HEA հ OH ࡴ౨ഗܮگ (3419 cm^-1)

௣؈Δۖขढ UA ঞנ෼ 3320 cm^-1հ NH ࡴ౨ഗհܮگΔ

᧩ق֘ᚨढհ NCO ፖ OH ࡴ౨ഗא֘ᚨګขढհ NHCOO (₏ഗظᎨ⢪) ࡴ౨ഗΖቹ 3 ੡֘ᚨढ HDI ֗ HEA ፖขढ UA հு጖٥஡٠ᢜቹΔࠡઌᣂհ௽ࢤ֏ᖂۯฝΔբᑑق

࣍ቹխΔط FT-IR ፖ HNMR ऱᦸࡳΔݺଚױᒔࡳ UA բ๯

ګפٽګנࠐΖ 2. ⶪᅞʠሱ⳺ջ

௅ᖕ PDLC ᓂऱሽ٠௽ࢤΔ೏։՗ഗޗऱމ୴෷ (np)

HDDAȮUA/HEA/PTTRIȮד UA/HEA/ PTTRA ʠ⸅⸇ᕗ 2/6/2 ⢌Јʠ PDLC ⍍ŊकԽヅࣱଃ

PDLC⍍᱿૪もヅࣱഛㅨ

HDDAȮUA/HEA/ PTTRIȮד UA/HEA/ PTTRA ʠ⸅⸇ᕗ 2/6/2 ⢌Јʠ PDLC ⍍ŊकԽヅࣱଃ

PDLC⍍᱿૪もヅࣱഛㅨ

ፖ෈དྷऱিऴމ୴෷ (n⊥) ૉ౨ઌ࿛ࢨ൷२Δᅝ؆ףሽ໱

ழΔპዠխ෈དྷ։՗ႉᚨሽ໱ඈ٨Δۖࠌ PDLC ᓂݮګ٠

݁֌տᔆΔ٠ᒵຏመۖྤཋ୴࿇سΖ੡Աࠌ PDLC ᓂڶለ ړऱሽ٠ࢤᔆΔࢬאഗޗऱ಻ֱᏁଈ٣ەᐞࠡމ୴෷ፖ෈

དྷਢܡฤٽΔڇءઔߒխΔݺଚᓳ಻ٺጟᖫ౟಻ֱֺࠏΔ אࠌࠡฤٽ E63 հ n⊥Δᖫ౟಻ֱֺࠏΕזᇆ֗࿏֏৵հމ

୴෷٨࣍। 1Ζ

3. ㋧ӠઈӠᄣ᚝ᇘ⍍ʠヅ҆ඖ⫨

෈དྷ᧩قᕴऱ׌૞္ޣ੡܅ᦀ೯ሽᚘ (Vth)Ε೏ኙֺ৫ (CR)Ε՛ऱᙈዩயᚨ (Hysteresis) ֗᥼ᚨழၴ(Response

Time)ΔՂ૪ሽ٠ࢤᔆऱړᡏެࡳ PDLC ᓂਢܡױ๯ᚨشΖ

0 20 40 60 80 100 120 140 160 180 200 220 240 260 Voltage (V)

90 80 70 60 50 40 30 20 10 0

trnasmission (%)

0 20 40 60 80 100 120 140 160 180 200 220 240 260 Voltage (V)

90 80 70 60 50 40 30 20 10 0

trnasmission (%)

(6)

ء ઔ ߒ ٣ല٠ ࿏ ֏ᖫ ౟ (UA, monoacrylate, diacrylate, triacrylate, ፖ tetraacrylate) אլٵૹၦֺ෗ٽ (ڕ।ԫ)Δ ٦ףԵ 80 wt%෈དྷΔא࿫؆٠ᅃ୴ 30 ઞࠌݮګ 8 ፖ 25µm দհ PDLC ᓂΔቹ 4~9 ੡ٺጟ಻ֱݮګհᜳᓂΔࠡਜףሽ ᚘኙઠຘ෷հቹݮΔᑇᖕᖞ෻࣍।Բ۟।ԮΖ

(ԫ) ઌٵૹၦֺΔլٵࡴ౨ഗᑇኙ PDLC ᓂሽ٠ࢤᔆհᐙ

᥼

ല԰ጟᖫ౟಻ֱ։੡Կิ (PUHD 442/ PUHT 442/

PUHTE 442ΔPUHD 262 /PUHT 262/ PUHTE 262 ֗ PUHD 181/ PUHT 181/ PUHTE 181)Δࠀᨠኘࠡഗءհ ሽ٠ࢤᔆΔطቹխױ࿇෼ڇઌٵᓂদ֗ૹၦֺൣउ ՀΔࡴ౨ഗᑇለڍհ಻ֱΔࢬ፹܂ګհ PDLC ᓂࠡᦀ ೯ሽᚘΕ堷ࡉሽᚘ݁ڶ֒೏ऱ᝟ႨΔࠡ଺ڂױ౨ਢᅝ

ࡴ౨ഗᑇᏺףழΔࠌٌᜤ֘ᚨለ੡ݙ٤Δທګ࿏֏৵ ऱ೏։՗ഗޗ࿨ዌለഒ࿏ΔሽॴଖՂ֒Δࠌპዠխऱ

෈དྷ։՗ለլ࣐ტ࠹ሽ໱Δਚࠡᦀ೯ሽᚘ֗堷ٽሽᚘ ለ೏Ζ

(Բ) ၴ၏ᓂদኙ PDLC ᓂሽ٠ࢤᔆհᐙ᥼

طቹ 4~9 ݺଚ࿇෼ᅝᓂদᏺףழΔࠡᦀ೯ሽᚘΕ堷ࡉ ሽᚘΕ֗ኙֺ৫݁ڶࣔ᧩ᏺףΔࠡ଺ڂױ౨ਢᓂদᏺ ףழΔለڶߩജ़ၴၞ۩ٌᜤ܂شΔࠌ൓ޗறޓ੡ഒ

࿏Δ່ۖ׌૞ऱ଺ڂᚨਢሽ໱ؘႊઠ။ޓڍऱ೏։՗

ഗޗΖ

4. ㋧Ӡઈࡣቨ⍍ҙᙟՒヅࣱ⎞㊪Ւヅࣱד㇤ُヅࣱʠ〦͸

ڇءઔߒխΔݺଚᨠኘࠩ಻ֱזᇆ PUHD262 հᜳᓂ ڶለ܅ऱᦀ೯ሽᚘΕ堷ࡉሽᚘ֗೏ऱઠຘ෷Δݺଚאຍิ

಻ֱףԵ 80 wt%հ෈དྷΔઔߒᓂփੌ೯ሽᚘፖᦀ೯ሽᚘհ ᣂএ֗ᓂփੌ೯ሽᚘፖ堷ࡉሽᚘऱᣂএΖઔߒ࿇෼؆ףሽ ᚘੌᆖᓂদ੡ 8 µm հ PDLC ᓂ৵Δطቹ 10 ࿇෼ኔᎾขس ऱሽ໱யᚨլࠩ؆ףሽੌऱԼ։հԫΔݺଚԾ࿇෼ᅝ PDLCᓂխऱੌ೯ሽᚘሒࠩ 1~1.5 V ழΔ؆ףሽᚘܛ੡ࠡᦀ ೯ሽᚘΔۖᓂխऱੌ೯ሽᚘሒࠩ 5~5.5 V ழΔ؆ףሽᚘܛ

੡ࠡ堷ࡉሽᚘΖᅝݺଚലᓂদᏺ੡ 25µm ழΔطቹ 11 ݺଚ

ٍ࿇෼ᅝᓂ৵ᏺ੡ 25 µm ழΔኔᎾขسऱੌ೯ሽᚘሒࠩ

1~1.5 V ழΔ؆ףሽᚘٍ੡ࠡᦀ೯ሽᚘΔۖੌ೯ሽᚘሒࠩ

5~5.5 VழΔ؆ףሽᚘٵᑌ੡ࠡ堷ࡉሽᚘΖ

߈Ȯ⃌ ⧄

ط๺ڍઔߒ᧩قΔ೏։՗։ཋ෈དྷᓂհሽ٠ࢤᔆ࠹ࠩ

๺ڍڂైऱᐙ᥼Δڕᓂխ෈དྷՕ՛ፖীኪ֗ഗޗ಻ֱ࿛

࿛Ζڇءઔߒխಾኙ UAΕHEAΕdiacrylateΕtriacrylateΕ

tetraacrylateլٵૹၦֺኙ PDLC ᓂሽ٠ࢤᔆհᐙ᥼ףאઔ

ߒΖݺଚ࿇෼אՀ࿨࣠Κ(1) ڇઌٵૹၦֺழΔtetraacrylate հᜳᓂࠠڶለ೏հމ୴෷Ζ(2) ڇઌٵૹၦֺழΔdiacrylate հᜳᓂΔԫ౳ۖߢΔࠠڶለࠋऱሽ٠ࢤᔆΖ(3) ᅝᓂփሽ

ᚘሒࠩ 1~1.5 (V)ழΔ؆ףሽᚘܛ੡ࠡᦀ೯ሽᚘΔۖᅝᓂփ ሽᚘሒࠩ 5~5.5 (V) ழΔ؆ףሽᚘܛ੡ࠡ堷ࡉሽᚘΖط࿨

࣠᧩قΔءઔߒࢬ፹܂հࢬڶ PDLC ᓂ ( 8µm ) ઃࠠڶش

࣍ሽ՗᧩ق֗٠൳ࠫցٙհᑨԺΖ

א≙⫏ᅆ

1. Chidichimo, G ., Arabia, G ., Golemme, A ., and Doane, J.

W., ”Electrooptic Properties of polymer Dispersed Liquid Crystals,“ Liquid Crystals, Vol. 5, No. 5, pp. 1443-1452 (1989).

2. Shimada, E., and Uchida, T., “Control of Polymer Orientation in Polymer Dispersed Liquid Crystal (PDLC) ,” Japanese Journal of Applied Physics, Vol. 31 , pp. 352-354 (1992).

5. Drzaic, Paul S., “ Comparison of Electro-Optical Response Functions of Nematic Droplet/Polymer Films, ” Molecular Crystals and Liquid Crystals, Vol. 198 , No.1, pp. 61-71 (1991).

6. Doane, J. W., Vaz, N. A., Wu, B. G., and Zumer, S.,

“Field Controlled Light Scattering From Nematic Microdroplets,” Applied Physics Letters, Vol. 48, No.4, pp. 269-271 (1986).

7. West, John L., “Phase Separation of Liquid Crystals in Polymers,” Molecular Crystals and Liquid Crystals, Vol.

157, No. 1, pp. 427-441 (1988).

8. Ryu, J. H., Lee, S. G., Nam, J. B., and Suh, K. D.,

“Influence of SMA Content on the Electro-optical Properties of Polymer-dispersed Liquidcrystal Prepared by

European Polymer Journal, Vol. 43, No. 5, pp. 2127-2134 (2007).

9. Yan, B., He, J., Bao, R., Bai, X., Wang, S., Zeng, Y., and Wang, Y., “ Modification of Electro-optical Properties of Polymer Dispersed Liquid crystal Films by Iniferter

44, No.

3, pp. 952-958 (2008).

10. Byung, K. K., Seon, H. K., and Jin, C. S., “Polymer Monodisperse Poly (MMA-co-SMA)/LC Microcapsules,”

Polymerization,” European Polymer Journal, Vol.

3. Vaz, N. A., Smith, G. W., and Montgomery Jr , G Paul,

“ A Light Control Film Composed of Liquid Crystal Droplets Dispersed in an Epoxy Matrix,” Molecular Crystals and Liquid Crystals, Vol.146 , No.1 , pp.17-34 (1987)

4.ʳ Montgomery Jr, G Paul, and Vaz, Nuno A., “ Contrast Rations of Polymer-dispersed Liquid Crystal Films,”

Applied Optics, Vol. 26 , No. 4 , pp. 738-743 (1987).

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Network Liquid Crystals From U.V. Curable Polyurethane Acrylate,” Polymer, Vol. 39, No. 24, pp. 5949-5959 (1998).

11. Park, M. S., Kim, B. K., and Kim, J. C., “Reflective Mode of HPDLC with Various Structures of Polyurethane acrylates,” Polymer, Vol. 44, No. 5, pp. 1595-1602 (2003).

12. Jung, J. A., Kim, B. K., and Kim, J. C., “ Effect of Oligomeric Surface Modifying Agent on Electro-optical Properties of Polymer Dispersed Liquid Crystal,”

European Polymer Journal, Vol. 42, No. 10, pp. 2667-2671 (2006).

2008ڣ 06 ִ 30 ֲ گᒚ 2008ڣ 07 ִ 02 ֲ ॣᐉ 2008ڣ 10 ִ 04 ֲ ᓤᐉ 2008ڣ 10 ִ 27 ֲ ൷࠹