상용 LDPE와 LLDPE의 무적 효과

이호석; 최순자

Polymer(Korea), Vol.18, No.3, 338-346, May, 1994

Export Citation

상용 LDPE와 LLDPE의 무적 효과

Effect of Anti-fogging Agent of Commercial LDPE and LLDPE

이호석, 최순자

초록

국내에서 시판되는 농업용 필름의 소재인 LDPE와 LLDPE의 무적성(anti-fogging effect)을 관찰하기 위하여 순수 LDPE와 LLDPE의 물성을 비교하였다. 유리 전이 온도와 용융 온도를 측정하였고, 이들의 밀도, 융해열(용융열)과 WAXS에 의한 무정형과 정형 상의 분율로 결정도를 계산하였으며, SAXS로 결정상의 긴 주기(long period)와 라멜라 두께를 계산하여 두 물질의 용융 거동에 대한 해석을 부연하였다. LDPE와 LLDPE의 결정도가 같은 것으로 판명되어 두 순수 시료와 이들 블렌드의 무적제에 대한 성능, 무적제의 이동 및 확산 속도 등이 고찰되었는데, 무적제의 이동은 결정성 고분자의 무정형상의 분율에 의존할 뿐, 결정의 라멜라 두께와 무관함이 관찰되었다.

The effect of arrti-fogging agents on commercially available LDPE and LLDPE films applied for agriculture was investigated. Measurements of the glass transition temperature and the melting temperature of the two sorts of materials were performed, and the degree of crystallinity was calculated and compared by using (1) the density, (2) the heat of fusion, and (3) the WAXS techniques. Long period and lamellar thickness obtained by SAXS was rationalized to support the difference in melting behavior between LDPE and LLDPE. Based on the same degree of crystallinity in LDPE and LLDPE, anti-fogging agents showed the simillar effects to the both LDPE and LLDPE, and the migration rates of the two materials were the same under experimental error. Experimental results showed that the migration of the anti-fogging agent may not depend on the lamellar thickness of crystals, but depends on the volume fraction of amorphous phase.

[References]

Foldes E, J. Appl. Polym. Sci., 48, 1905 (1993)
Defoor F, Groeninckx G, Reynaers H, Schouterden P, Vander Heijden B, J. Appl. Polym. Sci., 47, 1839 (1993)
Foldes E, Turcsanyi B, J. Appl. Polym. Sci., 46, 507 (1992)
Krigas TM, Carella JM, Strulinski MJ, Crist B, Graessley WW, J. Polym. Sci. B: Polym. Phys., 23, 509 (1985)
Chiang R, Flory PJ, J. Am. Chem. Soc., 83, 2857 (1961)
Hellwege VKH, Knappe W, Lehmann P, Kolloid-Zeitschrift Zeitschrift Polym., 183(2), 110 (1962)
Defoor F, Groeninckx G, Reynaers H, Schouterden P, VanderHeijden B, Macromolecules, 26, 2575 (1993)
Mandelkern L, Fatou JG, J. Polym. Sci. B: Polym. Phys., 3, 803 (1965)
Young RJ, Lovell PA, "Introduction to Polymers," 2nd Edi. p. 265 (1991)
Davies GT, Eby RK, J. Appl. Phys., 44, 4274 (1973)
Boyer RF, Macromolecules, 6, 288 (1973)
McCrum NG, "Molecular Basis of Transition and Relaxations," edited by Dale J. Meier, Gorden and Bread Sci. Publisher (1978)
Schouterden P, Groeninckx G, vanderHeijden B, Jansen F, Polymer, 28, 2099 (1987)

[Referenced By]

[1] Foldes E, J. Appl. Polym. Sci., 48, 1905 (1993)

[2] Defoor F, Groeninckx G, Reynaers H, Schouterden P, Vander Heijden B, J. Appl. Polym. Sci., 47, 1839 (1993)

[3] Foldes E, Turcsanyi B, J. Appl. Polym. Sci., 46, 507 (1992)

[4] Krigas TM, Carella JM, Strulinski MJ, Crist B, Graessley WW, J. Polym. Sci. B: Polym. Phys., 23, 509 (1985)

[5] Chiang R, Flory PJ, J. Am. Chem. Soc., 83, 2857 (1961)

[6] Hellwege VKH, Knappe W, Lehmann P, Kolloid-Zeitschrift Zeitschrift Polym., 183(2), 110 (1962)

[7] Defoor F, Groeninckx G, Reynaers H, Schouterden P, VanderHeijden B, Macromolecules, 26, 2575 (1993)

[8] Mandelkern L, Fatou JG, J. Polym. Sci. B: Polym. Phys., 3, 803 (1965)

[9] Young RJ, Lovell PA, "Introduction to Polymers," 2nd Edi. p. 265 (1991)

[10] Davies GT, Eby RK, J. Appl. Phys., 44, 4274 (1973)

[11] Boyer RF, Macromolecules, 6, 288 (1973)

[12] McCrum NG, "Molecular Basis of Transition and Relaxations," edited by Dale J. Meier, Gorden and Bread Sci. Publisher (1978)

[13] Schouterden P, Groeninckx G, vanderHeijden B, Jansen F, Polymer, 28, 2099 (1987)