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PLA-ETFE blend and preparation method thereof

A technology of PLA-ETFE and blends, which is applied in the field of PLA-ETFE blends and its preparation, can solve the problems of poor polarity and hydrophilicity of ETFE, and achieve wide application fields, good hydrophilicity and biocompatibility The effect of enhancing sex and hydrophilicity

Active Publication Date: 2016-08-17
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of ETFE polarity and poor hydrophilicity, and provide a PLA-ETFE blend with ETFE as the main composition and good hydrophilicity

Method used

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  • PLA-ETFE blend and preparation method thereof
  • PLA-ETFE blend and preparation method thereof
  • PLA-ETFE blend and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Mix PLA and ETFE according to the mass ratio of 0.1:99.9, 1:99, 3:97, 5:95, 10:90, respectively, and then add phthalic acid dilong chain containing 5.0% of the mass of ETFE respectively. Fluoroester, using a twin-screw extruder (Nanjing Chuangbo Machinery Equipment Co., Ltd., TSB-18), extruded and granulated according to the processing temperature in Table 1-1; respectively obtained PLA-ETFE blends 1-5 (referred to as products 1-5). The molecular formula of di-long-chain fluorine-containing phthalate is:

[0033] .

[0034] Table 1-1 Processing temperature

[0035] Partition

Embodiment 2

[0037] Mix PLA and ETFE uniformly at a mass ratio of 5:95, then add 0.1% dilong-chain fluorinated phthalate equivalent to the mass of ETFE (molecular formula is the same as in Example 1), and use a twin-screw extruder (Nanjing Chuangbo Machinery Equipment Co., Ltd., TSB-18), extruded and granulated according to the processing temperature in Table 1; obtained PLA-ETFE blend 6 (referred to as product 6).

Embodiment 3

[0039] Mix PLA and ETFE uniformly at a mass ratio of 5:95, then respectively add 5.0% dilong-chain fluorine-containing phthalate (molecular formula is the same as in Example 1) equivalent to the mass of ETFE, and use a twin-screw extruder (Nanjing Chuangbo Machinery Equipment Co., Ltd., TSB-18), extruded and granulated according to the processing temperature in Table 1-2; obtained PLA-ETFE blend 7 (referred to as product 7);

[0040] Table 1-2 Processing temperature

[0041] Partition

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Abstract

The invention relates to a PLA-ETFE blend and a preparation method of the PLA-ETFE blend, and belongs to the technical field of polymer material processing. The PLA-ETFE blend disclosed by the invention comprises PLA and ETFE, PLA accounts for 0.1 to 10% of the total mass of PLA and ETFE; PLA is dispersed in ETFE; the contact angle (CA) of water on the surface of the PLA-ETFE blend is lower than 74 degrees. The PLA-ETFE blend disclosed by the invention improves the own characteristics of low polarity and poor hydrophilicity of ETFE, and has better biocompatibility; when PLA accounts for 1 to 5% of the total mass of PLA and ETFE, the contact angle (CA) of water on the surface of the PLA-ETFE blend is lower than 69 degrees, and the PLA-ETFE blend is of a micro-phase separation structure. The PLA-ETFE blend disclosed by the invention is formed after PLA is dissolved out in a saturated aqueous solution of sodium hydroxide. Micropores which are distributed uniformly and densely are shown on the cross section of the PLA-ETFE blend through a scanning electron microscope. The PLA-ETFE blend can be used for preparing ETFE-based fibers with micropore structures, is suitable for diaphragm materials for electrolyzers in chlor-alkali industry and can effectively lower membrane resistance.

Description

technical field [0001] The invention relates to a PLA-ETFE blend and a preparation method thereof, belonging to the technical field of polymer material processing. Background technique [0002] ETFE is another high-performance fusible PTFE developed after FEP and PFA. The presence of ethylene chains in the molecular chain makes it more regular and symmetrical, with stronger crystallinity and higher tensile strength. Because of its excellent performance, it is widely used in many fields such as aerospace, military communications, chlor-alkali industry, marine industry, and membrane materials for modern buildings. Therefore, ETFE has always been concerned by researchers. However, ETFE itself has the characteristics of low polarity and poor hydrophilicity. [0003] Polylactic acid is a completely biodegradable aliphatic polyester. It is the biodegradable plastic with the highest hardness and strength. Biocompatibility and biodegradability are the two characteristics of PLA. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L67/04C08K5/12C08J9/26
Inventor 褚国红张书香李辉徐安厚耿兵
Owner UNIV OF JINAN