Biomass-Derived Alternating Polyester for Heat Resistance and Flexibility
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Solution Overview
Problem
Existing polyester compounds composed of cinnamic acid derivatives lack flexibility, while those composed of ricinoleic acid derivatives lack heat resistance, making it difficult to achieve simultaneous high heat resistance and flexibility in polymer materials.
Innovation Solution
Synthesizing a copolymer by alternately linking cinnamic acid and ricinoleic acid derivatives through polycondensation, using biomass-derived monomers, to create a novel polyester compound with alternating structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If polyester compounds are composed of cinnamic acid derivative, then heat resistance is improved, but flexibility deteriorates
Solution Approach 1:
The patent creates a copolymer composite material combining cinnamic acid derivative units (providing heat resistance) and ricinoleic acid derivative units (providing flexibility) in alternating sequence within the same polymer chain, achieving simultaneous heat resistance and flexibility that neither homopolymer could achieve alone
Solution Approach 2:
The alternating copolymer structure creates local regions with different properties: cinnamic acid units provide heat-resistant crystalline domains while ricinoleic acid units provide flexible amorphous regions, allowing the material to exhibit both heat resistance and flexibility at the macro level
2Ease of operation
If polyester compounds are composed of ricinoleic acid derivative, then flexibility is improved, but heat resistance deteriorates
Solution Approach 1:
The copolymer integrates ricinoleic acid derivative units for flexibility with cinnamic acid derivative units for heat resistance in an alternating structure, creating a composite material that simultaneously exhibits both properties
Solution Approach 2:
The alternating copolymer creates local flexible regions from ricinoleic acid units while maintaining overall heat resistance through periodic cinnamic acid units, enabling the material to be both flexible and heat-resistant
3Device complexity
If homopolymer is used, then structure simplicity is improved, but simultaneous achievement of heat resistance and flexibility deteriorates
Solution Approach 1:
The patent employs copolymer composition combining two different monomer units in alternating sequence, creating a composite polymer structure that achieves both heat resistance and flexibility simultaneously, overcoming the limitations of simple homopolymers
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The resulting polyester compounds exhibit both high heat resistance and flexibility, suitable for use as rubber or adhesive materials, and are efficiently produced using biomass-derived raw materials.
Implementation Method 1
carrying out polycondensation reaction using the ester compound as a monomer, a copolymer containing a cinnamic acid derivative and a ricinoleic acid derivative that are alternately linked to each other can be efficiently obtained
Data Source
AI summary
The present invention provides a biomass-derived polyester compound useful as a rubber material or an adhesive material, the compound including a multiple bond in the molecule. By synthesizing an ester compound composed of a hydroxycinnamic acid and a fatty acid, and carrying out polycondensation reaction using the ester compound as a monomer, a polyester compound containing cinnamic acid and a ricinoleic acid derivative that are alternately linked to each other can be efficiently obtained. For example, an ester compound of General Formula (1) is produced. (In the formula, the substituents R1 and R2 each represent a hydrogen atom or a methoxy group; the substituent R3 represents an alkyl group or an alkenyl group; and n represents an integer of 10 to 100).