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Light degradation speed-controllable type polycaprolactone and preparation method thereof

A technology of polycaprolactone and photodegradation, applied in the field of photodegradation speed-controllable polycaprolactone and its preparation, can solve problems such as difficulty in recycling aluminum foil, achieve low-cost, simple and easy separation, good film-forming performance and Barrier performance, beneficial effect for recycling

Inactive Publication Date: 2012-05-23
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Aluminum-plastic film has good mechanical properties and barrier properties. It has been widely used in the pharmaceutical packaging industry. The plastics used are generally non-degradable PP, PE and PVC, and aluminum foil recycling is caused by the difficulty of separating aluminum and plastic in aluminum-plastic film. Difficulties, bringing new environmental loads

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: Get 92 parts of polycaprolactone masterbatches, 4 parts of nano-titanium dioxide and the composite catalyst of fluorine and 4 parts of plasticizer butyl phthalate melt mixing by mass parts to make photodegradation speed can Controlled polycaprolactone, wherein the ratio of nanometer titanium dioxide to fluorine substance is 100:50. The polycaprolactone can be further made into other film products, and the service life of the products can be controlled within 3-5 years.

Embodiment 2

[0010] Embodiment 2: Get 96 parts of polycaprolactone masterbatches, 2 parts of nano-titanium dioxide and the composite catalyst of fluorine and 2 parts of plasticizer octyl phthalate melt mixing by mass parts to make photodegradation speed can Controlled polycaprolactone, wherein the ratio of nanometer titanium dioxide to fluorine substance is 100:100. The polycaprolactone can be further made into other film products, and the service life of the products can be controlled within 3-5 years.

Embodiment 3

[0011] Embodiment 3: Get 93 parts of polycaprolactone masterbatches, 3 parts of nano-titanium dioxide and the composite catalyst of fluorine and 4 parts of plasticizer butyl phthalate melt mixing by mass parts to make photodegradation speed can Controlled polycaprolactone, wherein the ratio of nanometer titanium dioxide to fluorine substance is 100:70. The polycaprolactone can be further made into other film products, and the service life of the products can be controlled within 3-5 years.

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PUM

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Abstract

The invention provides light degradation speed-controllable type polycaprolactone and a preparation method thereof. The preparation method is as follows: mixing mother material polycaprolactone and nano titanium dioxide with a complex catalyst of fluorine and lanthanum, cerium, praseodymium or neodymium; and then adding plasticizer butylphthalate or octyl phthalate to prepare the light degradation speed-controllable type polycaprolactone by fusion mixing. The polycaprolactone in the invention has good film-forming property, the mechanical property and the barrier property of the polycaprolactone can completely satisfy the performance requirements of medicine packaging Al-plastic films, and the environment pollution problem generated after the Al-plastic film is abandoned is solved.

Description

technical field [0001] The invention relates to a preparation method of polycaprolactone, in particular to a polycaprolactone with controllable photodegradation speed and a preparation method thereof. Background technique [0002] Aluminum-plastic film has good mechanical properties and barrier properties. It has been widely used in the pharmaceutical packaging industry. The plastics used are generally non-degradable PP, PE and PVC, and aluminum foil recycling is caused by the difficulty of separating aluminum and plastic in aluminum-plastic film. Difficulties have brought new environmental loads. If the plastic used in the aluminum-plastic film is photodegradable and biodegradable, this problem can be solved smoothly. Contents of the invention [0003] The object of the present invention is to solve the above existing problems in the prior art, and provide low-cost, easy-to-prepare polycaprolactone with controllable photodegradation speed and a preparation method thereof...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08K5/12C08K3/22
Inventor 刘保健尹大伟宋蕊卜宇王峥杨琳琳焦旭英田楠
Owner SHAANXI UNIV OF SCI & TECH
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