MaSp Fiber Composite with Polymer Matrix for Mechanical Strength
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Solution Overview
Problem
There is an unmet need for improved compositions and methods to produce fibers with mechanical properties similar to natural spider silk, which is known for its exceptional strength and toughness.
Innovation Solution
The development of a composition comprising a porous major ampullate spidroin protein (MaSp)-based fiber bound to a first polymer, with a second polymer filling at least 50% of the fiber's volume, creating a copolymer that enhances mechanical properties such as Young's modulus and tensile strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If synthetic spider silk is created through genetic engineering, then production capability is improved, but mechanical properties similar to natural spider silk are not achieved
Solution Approach 1:
The patent creates a composite material system combining MaSp protein-based fibers with synthetic polymers (PCL, PLA, PU). The MaSp fiber provides the structural framework with natural silk-like properties, while the synthetic polymer matrix contributes strength, toughness, and processability. This composite approach allows achieving mechanical properties similar to natural spider silk while enabling scalable production through established polymer processing techniques.
2Strength
If polymer is bound to MaSp-based fiber, then mechanical properties are improved, but structural integrity may be compromised
Solution Approach 1:
The MaSp-based fiber is designed with a porous structure that allows synthetic polymer to penetrate and fill the pores while maintaining the fiber's structural framework. The polymer binds to the fiber surface and within pores, reinforcing the structure without collapsing the porous architecture. This creates a hierarchical composite where the porous MaSp fiber provides surface area for binding while the synthetic polymer fills voids and enhances mechanical properties, preserving overall structural integrity.
Data Source
AI summary
Compositions comprising at least one major ampullate spidroin protein (MaSp)-based fiber, a polymer bound to the MaSp-based fiber, and optionally a further polymer having a molecular weight in the range of 1000 Da to 1000 kDa, are provided. Further, methods for preparation of same are provided.