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A kind of polypropylene carbonate/poss hybrid material and preparation method thereof

A polypropylene carbonate and hybrid material technology, applied in the field of polypropylene carbonate/POSS hybrid material and its preparation, can solve the problems of cumbersome process, decreased catalytic efficiency of catalyst, etc., and achieves simple, stable and easy preparation process. control, and good mechanical properties

Active Publication Date: 2018-11-30
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It should be pointed out that the functional polycarbonate currently developed is basically focused on improving its hydrophilicity, and there are few reports on the research on hydrophobic polypropylene carbonate.
On the other hand, when preparing hydrophilic polypropylene carbonate, ternary copolymerization is generally used first, and then a series of chemical reactions can be used to realize its functionalization, and the process is relatively cumbersome.
In addition, it is worth noting that when the third monomer is introduced for ternary copolymerization, the catalytic efficiency of the catalyst will generally decrease.

Method used

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  • A kind of polypropylene carbonate/poss hybrid material and preparation method thereof
  • A kind of polypropylene carbonate/poss hybrid material and preparation method thereof
  • A kind of polypropylene carbonate/poss hybrid material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 56 mg main catalyst chiral (1R, 2R)SalenCoX (see structural formula, R 1 =R 2 = tBu, R 3 and R 4 Both are -(CH 2 ) 2 -, X is 2,4-dinitrophenol oxyanion OPh(NO 2 ) 2 -) and an appropriate amount of co-catalyst bis-triphenylammonium chloride were placed in a 100ml dry reactor, heated to 80°C and dried in vacuum for 6 hours. After drying, an appropriate amount of carbon dioxide (equivalent to making the vacuum The pressure in the reactor under the pressure reaches 0.5MPa), after cooling to room temperature, slowly release the carbon dioxide in the reactor, and inject the mixed solution of monoepoxy POSS and propylene oxide (wherein, monoepoxy POSS0.83g, Propylene oxide 10ml, the molar ratio of main catalyst, co-catalyst and propylene oxide is 1:1:2000, the mass ratio of monoepoxy POSS to propylene oxide is 1:10, fill with carbon dioxide and keep a constant pressure of 2.0MPa. Control the temperature at 25°C, and conduct a polymerization reaction under magnetic stir...

Embodiment 2

[0037] In the reaction equipment identical with embodiment 1, replace two-triphenylammonium chloride with tetrabutylammonium iodide, other reaction conditions, treatment process and sample test are identical with embodiment 1. The obtained results are shown in Table 1.

Embodiment 3

[0039] In the same reaction equipment as in Example 1, the reaction temperature was 30° C., and other reaction conditions, treatment process and sample testing were the same as in Example 1. The obtained results are shown in Table 1.

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Abstract

The invention provides a polypropylene carbonate / POSS hybrid material and a preparation method thereof. The hybrid material is copolymerized from monoepoxy POSS, epoxypropane and carbon dioxide under the action of a catalyst, wherein the mass ratio of epoxypropane to monoepoxy POSS is 10 to (1-5). The polypropylene carbonate / POSS hybrid material prepared by adopting the method has good thermal performance, good mechanical performance and good hydrophobic property. Furthermore, the preparation method has high efficiency and excellent effect, and is convenient for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of polymer hybrid materials, and in particular relates to a polypropylene carbonate / POSS hybrid material and a preparation method thereof. Background technique [0002] Polypropylene carbonate (PPC) is an alternating copolymer of carbon dioxide and propylene oxide. Because of its excellent properties such as biodegradability, biocompatibility, high transparency, flexibility and gas barrier properties, it is used in It has a very broad application prospect in the field of medicine and packaging materials. However, the glass transition temperature (T g ) is low, thermal stability and mechanical strength are poor, so that it cannot be used as a structural material alone. In order to improve the thermal and mechanical properties of polypropylene carbonate, a lot of research work has been carried out at home and abroad, such as blending, ternary copolymerization and end-capping. In addition, the functionalizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G64/38C08G64/34
CPCC08G64/34C08G64/38
Inventor 常海波李庆硕李燕新张予东卜站伟周大鹏乔聪震林童李小红张治军
Owner HENAN UNIVERSITY