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Germ-repellent elastomer

A biodegradable, polymer technology, used in the polymer field

Inactive Publication Date: 2020-01-17
NANO & ADVANCED MATERIALS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these traditional thermoplastic blends are not considered fully biodegradable

Method used

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  • Germ-repellent elastomer
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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0012] In the preparation methods described herein, the steps may be performed in any order without departing from the principle of the invention, except when the time or operation sequence is explicitly stated. Recitation in a claim that a step is first performed, followed by several other steps, shall be construed to mean that the first step is performed before any other steps, but that the other steps may be performed in any suitable order unless further The sequence is described. For example, a claim element that recites "step A, step B, step C, step D, and step E" should be interpreted to mean that step A is performed first, and step E is performed last, and that steps B, C, and D can be performed in step A and E in any order that still falls within the literal scope of the claimed method. A given step or a subset of steps may also be repeated.

[0013] Furthermore, specified steps may be performed simultaneously unless the claim recitation explicitly recites that they ...

specific Embodiment approach

[0019] The following examples illustrate the invention in more detail.

Embodiment 1

[0022] Example 1 - Selection of mechanical property modifiers:

[0023] A range of reagents and modifying compounds were investigated for their ability to modify mechanical properties, such as elongation at break and tensile strength upon incorporation into biodegradable polymers such as polylactic acid (PLA)-based polymers. First, choose As a PLA-based polymer, it can be easily applied in industrial processes because of its injection molding-grade properties. Polyethylene glycol sorbitan hexaoleate (PEG-SHO) represented by formula (I) and polycaprolactone (PCL) represented by formula (II) were selected as the PLA-based biodegradable polymer of the present invention. Modifiers for mechanical properties of substances:

[0024]

[0025]

[0026] The effect of their modification on PLA was investigated by comparing the tensile properties of PEG-SHO and PCL before and after modification. V-type specimens (ISO 527) were obtained by injection molding of modified and origin...

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Abstract

The present invention provides a germ-repellent elastomer comprising: a base polymer selected from latex, synthetic rubber, thermoplastic elastomers, or copolymers or mixtures thereof; and at least one germ-repelling modifier selected from one or more polyethoxylated non-ionic surfactants such that a highly hydrophilic moiety is imparted from the at least one germ-repelling modifier to the base polymer either by physical or reaction extrusion.

Description

technical field [0001] The present invention provides biodegradable polymers. More specifically, the polymers of the present invention have an elongation at break of at least 200%. Background technique [0002] Biodegradable polymers are considered as promising alternatives to tackle the problem of plastic material accumulation. Extensive research has been conducted on the mechanical strength, elongation, and biodegradability of promising biodegradable polymer classes such as polylactic acid, polyhydroxyalkanoate, and thermoplastic starch. Due to the semi-crystalline nature of these materials, they typically have high tensile strength but low elongation at break, typically breaking at a few percent elongation. High tensile strength is good for maintaining the shape of injection molded or thermoformed parts such as feeding utensils, disposable drinking cups, etc. However, the brittle nature of the material significantly reduces the amount of deformation the component under...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L71/02
CPCC08L67/04C08L2201/06C08L71/02C08G65/331
Inventor 卢冠峰武友李尚然郭秀娟
Owner NANO & ADVANCED MATERIALS INST
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