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Biological degradable thin film material for transfusion bag and its preparing method

A film material and biological technology, applied in the field of biodegradable infusion bag film materials and its preparation, can solve the problems of non-degradable and toxic gas generation, and achieve the effects of improving flexibility, lowering glass transition temperature, and lowering elastic modulus

Inactive Publication Date: 2006-08-23
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The film material for infusion (blood) bags is mainly made of polyvinyl chloride (PVC). Although the cost is relatively low, it cannot be degraded and produces toxic gas when burned.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: The average molecular weight of polylactic acid is 40,000, and tri-n-butyl acetyl citrate is kneaded in a kneader at 120°C for 7 minutes at a weight ratio of 90:10, and the obtained mixture is hot-pressed at 120°C on a flat vulcanizer to form a film , The mechanical properties of the obtained polylactic acid film: the elastic modulus is 300.16MPa, the tensile strength is 26.58MPa, and the elongation at break is 349%.

Embodiment 2

[0022] Example 2: Polylactic acid with an average molecular weight of 1.5 million and tri-n-butyl citrate were kneaded in a kneader at 130°C for 7 minutes at a weight ratio of 80:20, and the resulting mixture was hot-pressed on a flat vulcanizer to form a film. The mechanical properties of the polylactic acid film: the modulus of elasticity is 52.28MPa, the tensile strength is 23.38MPa, and the elongation at break is 332.73%.

Embodiment 3

[0023] Example 3: The average molecular weight of polylactic acid is 100,000, polyethylene glycol is kneaded in a kneader at 135°C for 7 minutes at a weight ratio of 85:15, and the obtained mixture is hot-pressed on a flat vulcanizer to form a film, and the obtained polylactic acid The mechanical properties of the film: the modulus of elasticity is 151.21MPa, the tensile strength is 22.7MPa, and the elongation at break is 335.99%.

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PUM

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Abstract

The present invention relates to a kind one biodegradable film material for transfusion bag and its preparation process. The new type of medical film is prepared with polylactic acid as main material; proper amount of polyepsilon-caprolactone and lactic acid-epsilon-caprolactone copolymer; medical plasticizer tributyl acetylcitrate, tributyl citrate, triethyl citrate or polyglycol; defoaming agent methyl silicon oil or tributyl phosphate; lubricant aluminum stearate or calcium stearate; heat stabilizer maleic anhydride or EOS; and strengthening agent MMT. The biodegradable film material for transfusion bag has excellent flexibility, physical and chemical performance, and biological performance, and is expected to replace non-degradable film to avoid í‹white pollutioníŒ.

Description

technical field [0001] The invention relates to a film material for a biodegradable infusion (blood) bag and a preparation method thereof, in particular to a film material for a biodegradable infusion (blood) bag with polylactic acid as a main raw material and a preparation method thereof. Background technique [0002] In recent years, the research and development of biodegradable plastics has developed rapidly. Most of the initial research focused on partially degradable collapsible plastics, which have been gradually rejected. An essential feature of the current concept of biodegradable materials is that they are completely biodegradable in nature. [0003] Polylactic acid (PLA) is a synthetic linear aliphatic polyester, which is considered to be the most important biodegradable polymer in the medical field. Due to the increasing use of lactic acid and the continuous improvement of production technology, it can be predicted that the demand for lactic acid in the future f...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08K5/09A61J1/10C08K3/34C08K5/10
Inventor 尹静波曹燕琳俞臻阳颜世峰陈学思庄秀丽周军
Owner SHANGHAI UNIV
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