Application of epoxy functionalized acrylic ester polymer

An acrylate and epoxy-functional technology, which is applied in the application field of epoxy-functionalized acrylate polymers, can solve the problems of high hazard, difficulty in obtaining, and long preparation route, and achieve low toxicity and increased compatibility , the effect of increasing the molecular weight

Inactive Publication Date: 2011-04-20
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, isocyanates are very harmful to the human body and pollute the environment
[0005] Bikiaris (Polymer Chemistry, 1996, 34 (7): 1337-1342) etc. use self-synthesized several diglycidyl ester compounds containing imide rings to carry out chain extension t

Method used

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  • Application of epoxy functionalized acrylic ester polymer
  • Application of epoxy functionalized acrylic ester polymer
  • Application of epoxy functionalized acrylic ester polymer

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0045] Example 1

[0046] 1) Preparation of an epoxy functionalized acrylic polymer:

[0047] Component

[0048] Batch polymerization: According to the formula, the raw materials are mixed uniformly, 900 grams of toluene, 2032 grams of methyl methacrylate, 168 grams of glycidyl methacrylate, 4.8 grams of di-tert-butyl peroxide, and n-dodecyl sulfide Alcohol 1.2g, mixed evenly, put it into a 5 liter reactor, use a Milton Rouge die feed pump into the reactor, stir at a stirring speed of 160r / min, use nitrogen or other inert gas to fully replace the air in the reactor , Use an oil bath to heat up the temperature, the temperature of the oil bath is constant at 120 ℃, after 3 hours from the start of the oil bath, the mixture is obtained;

[0049] Transfer to continuous polymerization: the temperature of the oil bath is constant at 120℃, the viscosity in the kettle is suitable, the material is discharged at a constant speed of 24-26g / min, and the mixed raw materials are added at a cons...

Example Embodiment

[0051] Example 2

[0052] 1) Preparation of an epoxy functionalized acrylic polymer:

[0053] Component

[0054] The polymerization method is the same as in Example 1.

[0055] 2) Weigh 49.5g of polylactic acid and 5.5g of epoxy functionalized acrylate polymer and melt and blend in the Hack Torque Rheometer, the reaction temperature is 180℃, the rotation speed is 60r / min, and the mixing time is 10min. The measured weight average molecular weight, equilibrium torque value, and glass transition temperature of the chain-extended modified polylactic acid are listed in Table 1.

Example Embodiment

[0056] Example 3:

[0057] 1) Preparation of an epoxy functionalized acrylic polymer:

[0058] Component

[0059] The polymerization method is the same as in Example 1.

[0060] 2) Weigh 48.4g of polylactic acid and 6.6g of epoxy functionalized acrylate polymer and melt and blend in the Hack Torque Rheometer, the reaction temperature is 180℃, the rotation speed is 60r / min, and the mixing time is 10min. The weight average molecular weight, equilibrium torque value, and glass transition temperature of the chain-extended modified polylactic acid are listed in Table 1.

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Abstract

The invention relates to application of an epoxy functionalized acrylic ester polymer. The acrylic ester polymer is used for a polylactic-acid modified chain extender, has little toxicity without volatility, contains a plurality of epoxy functional groups, and can chemically react with polylactic acid molecular chains in melt blending with polylactic acid and connect two or more than two polylactic acid molecular chains through a chemical bond to greatly improve the molecular weight of the polylactic acid, and the compatibility between the polylactic acid and the acrylic ester polymer is enhanced because of the chemical reaction between the polylactic acid and the acrylic polymer. The modified polylactic acid has the weight-average molecular weight from 367,000 to 505,000, the vitrification conversion temperature from 64.2 DEG C to 66.4 DEG C and the balance torque value from 5.1 N*m to 9.8 N*m and is suitable for subsequent processing.

Description

technical field [0001] The invention relates to the application of an epoxy functionalized acrylate polymer. Background technique [0002] Polylactic acid (PLA) is a non-toxic, non-irritating polymer material with good biodegradability and biocompatibility. It can be decomposed into carbon dioxide and water in the natural environment due to hydrolysis or microbial degradation. Moreover, its raw material can be prepared by fermentation of starch, etc., and is a recyclable green and environmentally friendly plastic. However, polylactic acid is brittle and has poor impact resistance, so it is necessary to modify polylactic acid in some applications. In particular, the relative molecular weight of polylactic acid obtained by the direct polycondensation method is very low, so the method of chain extension by chemical reaction during processing is widely used. [0003] Woo et al. (Polym Bull, 1995. VOL.35, NO.4, P415) first reported the melt chain extension method of diisocyana...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/32C08F220/18C08G63/91C08L67/04C08L33/12C08L33/08
Inventor 谭志勇李外张会轩杨海东张明耀吴广峰孙树林周超
Owner CHANGCHUN UNIV OF TECH
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