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Polylactic acid/ZIF-8@C600 composite material and preparation method and application thereof

A technology of ZIF-8 and composite materials, applied in chemical instruments and methods, rayon manufacturing, and other chemical processes, can solve the problems of insufficient economy and energy saving, cumbersome porous operation, etc., and achieve improved oil-water separation performance and surface roughness , The effect of increasing the specific surface area

Active Publication Date: 2019-01-04
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the graphene oxide composite polylactic acid porous monomer oil adsorbent prepared by Liu et al. (Y. Liu, et al, Compos. Sci. Technol. 2015, 118:9–15.), but the porous formation process is cumbersome , Freezing and drying for a long time at low temperature is not economical and energy-saving

Method used

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  • Polylactic acid/ZIF-8@C600 composite material and preparation method and application thereof
  • Polylactic acid/ZIF-8@C600 composite material and preparation method and application thereof
  • Polylactic acid/ZIF-8@C600 composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 1.5g of carbon black particles in 750mL of hydrochloric acid, ultrasonically reflux in a water bath at 60°C for 3h, filter and wash with water until neutral, and dry under vacuum at 110°C for 12h to obtain purified carbon black. Weigh 1.5g of purified carbon black in 750mL of nitric acid and hydrogen peroxide mixed solution, ultrasonically reflux at 60°C in a water bath for 4h, filter and wash with water until neutral, then dry under vacuum at 110°C for 12h to obtain oxidized carbon black, which is easy to dissolve in methanol Dispersed carbon black. Weigh 0.489g of oxidized carbon black in 300mL of methanol, stir for 2h, and then ultrasonically disperse for 2h. Dissolve 4.806g of 2-methylimidazole in 300mL of methanol, and simultaneously weigh 4.461g of zinc nitrate hexahydrate and dissolve in 300mL of methanol, then immediately pour it into the methanol solution of 2-methylimidazole to mix the two evenly, and then oxidize The methanol dispersion of carbon black...

Embodiment 2

[0033] Weigh 1.5g of carbon black particles in 750mL of hydrochloric acid, ultrasonically reflux in a water bath at 60°C for 3h, filter and wash with water until neutral, and dry under vacuum at 110°C for 12h to obtain purified carbon black. Weigh 1.5g of purified carbon black in 750mL of nitric acid and hydrogen peroxide mixed solution, ultrasonically reflux at 60°C in a water bath for 4h, filter and wash with water until neutral, then dry under vacuum at 110°C for 12h to obtain oxidized carbon black, which is easy to dissolve in methanol Dispersed carbon black. Weigh 0.489g of oxidized carbon black in 300mL of methanol, stir for 2h, and then ultrasonically disperse for 2h. Dissolve 4.806g of 2-methylimidazole in 300mL of methanol, and simultaneously weigh 4.461g of zinc nitrate hexahydrate and dissolve in 300mL of methanol, then immediately pour it into the methanol solution of 2-methylimidazole to mix the two evenly, and then oxidize The methanol dispersion of carbon black...

Embodiment 3

[0036] Weigh 1.5g of carbon black particles in 750mL of hydrochloric acid, ultrasonically reflux in a water bath at 60°C for 3h, filter and wash with water until neutral, and dry under vacuum at 110°C for 12h to obtain purified carbon black. Weigh 1.5g of purified carbon black in 750mL of nitric acid and hydrogen peroxide mixed solution, ultrasonically reflux at 60°C in a water bath for 4h, filter and wash with water until neutral, then dry under vacuum at 110°C for 12h to obtain oxidized carbon black, which is easy to dissolve in methanol Dispersed carbon black. Weigh 0.489g of oxidized carbon black in 300mL of methanol, stir for 2h, and then ultrasonically disperse for 2h. Dissolve 4.806g of 2-methylimidazole in 300mL of methanol, and simultaneously weigh 4.461g of zinc nitrate hexahydrate and dissolve in 300mL of methanol, then immediately pour it into the methanol solution of 2-methylimidazole to mix the two evenly, and then oxidize The methanol dispersion of carbon black...

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Abstract

The invention discloses a polylactic acid / ZIF-8@C600 composite material and a preparation method and application thereof. The composite material is prepared from polylactic acid and ZIF-8@C600 composite nano modifier which are carbon black particles with ZIF-8 loaded on the surfaces in the mass ratio of (99.9-99.0):(0.1-1.0). Accordingly, a solution blending method is adopted, a polylactic solution and ultrasonic dispersion liquid of dichloromethane of the ZIF-8@C600 composite nano modifier are blended in proportion, and the composite material is obtained through an electrospinning method. Thehydrophobic property and oil absorbency of the composite material are obviously improved, and meanwhile the oil-water separation performance is achieved; in addition, the product is biodegradable, safe, reliable, free of peculiar smell and low in damage and pollution degree to the human body and environment.

Description

technical field [0001] The invention belongs to the technical field of modification of polylactic acid materials, and relates to a polylactic acid / ZIF-8@C600 composite material and its preparation method and application. Background technique [0002] Polylactic acid (PLA), a biodegradable material, has broad application prospects in food packaging, textile industry and electrical equipment industry. Its electrospun fibers have high specific surface area, porosity, biocompatibility and hydrophobic properties, and can play a role in the fields of gas adsorption, bioengineering and oil pollution treatment. However, the hydrophobicity of polylactic acid decreases after electrospinning, which makes its oil absorption performance worse, which limits its application as an oil adsorbent. Therefore, it is necessary to hydrophobically modify polylactic acid to increase its oil absorption. [0003] Generally, nano-rough structures can be constructed on the surface of materials, or th...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08K9/12C08K3/04D01F6/92D01F1/10B01J20/26B01J20/22
CPCB01J20/226B01J20/262C08K3/04C08K9/12D01F1/10D01F6/92C08L67/04
Inventor 王新龙李旭代秀张咪谢炯王雅婷詹亿兴丁晓庆王明
Owner NANJING UNIV OF SCI & TECH
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