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A carbon dioxide-based functional polycarbonate material and preparation method thereof

A polycarbonate and carbon dioxide technology, applied in the field of polymers, can solve the problems of complicated preparation steps and single types of functional groups.

Active Publication Date: 2017-12-01
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a carbon dioxide-based functional polycarbonate for the cumbersome preparation steps in the current preparation of functional polycarbonate technology and the shortcomings of only one functional group on the polymer chain and a single type of functional group. Ester material and preparation method thereof, the side group of the material has epoxy groups and cyclic carbonates and a difunctional polycarbonate with an adjustable ratio of the two, and it is functionalized

Method used

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  • A carbon dioxide-based functional polycarbonate material and preparation method thereof
  • A carbon dioxide-based functional polycarbonate material and preparation method thereof
  • A carbon dioxide-based functional polycarbonate material and preparation method thereof

Examples

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Embodiment 1

[0040] A) Weigh 0.1mmol [ONSO] type metal complex (R 1 = H, R 2 =R 3 = t Bu), and 0.3mmolPPNCl (bistriphenylphosphoryl ammonium chloride) in a 50ml stainless steel autoclave, evacuated at 60°C for 2h, then added 100mmol4-vinyl-1-cyclohexene dioxide, in carbon dioxide React at 80°C for 6 hours at a pressure of 3 MPa, then cool and deflate, precipitate the product in methanol, filter and dry at 60°C for 24 hours to obtain 20 mmol of carbon dioxide-based functional polycarbonate material;

[0041] Wherein, the value of m is 8, and the value of n is 21. (The average molecular weight measured by GPC can prove that the m value is in the range of 1-250 and the n value is in the range of 1-250, because the molecular weight of each segment can be calculated according to the molecular formula, and the molecular weight of the polymer is that of each segment The molecular weight is multiplied by the number of chain segments (i.e. m, n value), the average molecular weight recorded by G...

Embodiment 2

[0044] All the other operations are the same as in Example 1, except that step (A) is filled with carbon dioxide to 0.5MPa. Among them, the m value is 5, the n value is 13, the average molecular weight is 3900, and the molecular weight distribution is 2.6. Yield 90%.

Embodiment 3

[0046] All the other operations are the same as in Example 1, except that step (A) is filled with carbon dioxide to 5.0 MPa. Among them, the m value is 9, the n value is 21, the average molecular weight is 6400, and the molecular weight distribution is 4.7. Yield 87%.

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Abstract

The invention provides a carbon dioxide-based functional polycarbonate material of which the structural formula is shown in the formula (I), wherein m is equal to 1 to 250, and n is equal to 1 to 250. The carbon dioxide-based functional polycarbonate material is prepared according to the following steps: adding a metal complex and a promotor into a high-pressure reaction kettle; vacuumizing at 60 DEG C for 1 to 3 hours; adding 4-vinyl-1-cyclohexene dioxide; pumping in carbon dioxide till the pressure is 0.5 to 5.0 MPa; carrying out a reaction for 2 to 10 hours at 50 to 110 DEG C, so as to obtain the polycarbonate. As the proportion of epoxide groups to circular carbonic ester in lateral groups can be controlled, and a functional platform can be provided due to the existence of the epoxide groups and the circular carbonic ester, the functional range is greatly widened, and the glass transition temperature Tg can reach up to 156.5 DEG C.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a bifunctional polycarbonate with epoxy groups and cyclic carbonates whose ratio can be adjusted by selective ring-opening of diepoxides and carbon dioxide to generate side groups, and for side groups The epoxy group and the cyclic carbonate carry out a functional reaction to obtain a functional polycarbonate material. Background technique [0002] Aliphatic polycarbonate has been widely used in biomedicine and other fields because of its low toxicity and biodegradability. In recent years, more and more attention has been paid to the synthesis of functionalized aliphatic polycarbonates, which have excellent physical, chemical and biological properties to meet different needs by changing the chemical structure of the main chain. [0003] Designing cyclic carbonate monomers containing functional groups or reactive groups, and using them for ring-opening polymerization, is one of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G64/34C08G64/42
CPCC08G64/34C08G64/42
Inventor 刘宾元韩冰董广阔
Owner HEBEI UNIV OF TECH