Corn starch composite membrane as well as preparation method and applications thereof

A corn starch, waxy corn starch technology, applied in climate change adaptation, sustainable manufacturing/processing, flexible covering, etc. The effect of good social and economic benefits
CN104194064AActive Publication Date: 2014-12-10QINGDAO AGRI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO AGRI UNIV
Publication Date
2014-12-10

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Abstract

The invention discloses a corn starch composite membrane as well as a preparation method and applications thereof. The corn starch composite membrane comprises corn starch, glycerol and an enhancer, wherein the enhancer is nano CaCO3, waxy corn starch nanoparticles or chitosan, the mass ratio of the corn starch to glycerol is equal to (6.5-8.0):(1.5-3.0), when the enhancer is nano CaCO3 and waxy corn starch nanoparticles, the masses of the enhancer / corn starch are respectively 0.02-0.5, and 1-25; when the enhancer is nano CaCO3 or chitosan, the mass ratio of nano CaCO3 and corn starch is 0.06, and the mass ratio of chitosan and corn starch is 10-50; the size of the nano CaCO3 ranges from 30nm to 50nm; and the size of the waxy corn starch nanoparticles is 70-120nm. The mechanical performance of the composite membrane is obviously improved; the light transmittance and moisture penetrability of the membrane can be reduced; the thermal characteristic is better; the thermal stability of the composite membrane is higher than that of the corn starch membrane; and the corn starch and the nano CaCO3 particles have better compatibility.
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Description

technical field

[0001] The invention relates to a cornstarch composite film and its preparation method and application. Background technique

[0002] With the depletion of petroleum resources and the increasing severity of "white pollution", the research and application of degradable packaging films made of renewable resources such as natural polymers have gradually become the focus of scientific research. Starch has the advantages of being environmentally friendly and degradable, and has broad application prospects. The single starch film currently studied has poor mechanical properties and poor moisture resistance, which is greatly limited in the application field.

[0003] Nanoparticles have high surface energy and reactivity, and are prone to aggregation, weakening or even losing their original special properties. This undoubtedly greatly limits the application of nano zinc oxide in the fields of biology and medicine, such as ultraviolet light shielding materials and a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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