Title: Engineering hybrid textile braids for tendon and ligament repair application

Journal Article · · Journal of Applied Polymer Science
DOI: https://doi.org/10.1002/app.52013 · OSTI ID:1836137
 [1];  [2];  [3];  [4];  [5]; ORCiD logo [2]
  1. REQUIMTE‐LAQV, Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia Universidade do Porto Porto Portugal, Instituto de Polímeros e Compósitos, Departamento de Engenharia de Polímeros Universidade do Minho Guimarães Portugal
  2. REQUIMTE‐LAQV, Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia Universidade do Porto Porto Portugal
  3. Centro de Ciência e Tecnologia Têxtil Universidade do Minho Guimarães Portugal
  4. INEGI, Departamento de Engenharia Mecânica, Faculdade de Engenharia Universidade do Porto Porto Portugal
  5. Instituto de Polímeros e Compósitos, Departamento de Engenharia de Polímeros Universidade do Minho Guimarães Portugal

Abstract Challenges involving tendon and ligament repair have motivated the investigation of new strategies to improve clinical outcomes. These have been mainly based on polymer constructs, which may be non‐biodegradable or biodegradable. The former typically fails due to lack of device integration and the latter demands a complex balance between biodegradability and tissue ingrowth, often failing due to insufficient mechanical properties. This work presents the development of hybrid braids based on polyethylene terephthalate (PET) and polylactic acid (PLA) yarns. A textile technique was used to fabricate braids based on 16 multifilament yarns of varying PLA/PET composition. The composition was varied to maximize biodegradability while ensuring mechanical performance. The braids' morphology, physical and mechanical properties were characterized. As production parameters and architecture were maintained, the braids exhibited similar porosity and wicking ability. The breaking force and stiffness decreased significantly as the number of PLA yarns increased, although strain levels remained constant. Braids containing 10 and 12 PET yarns (out of the total 16 yarns) demonstrated good creep and force‐relaxation behavior, as well as resistance to cyclic loading. These compositions were selected for future work, to be assembled into more elaborate structures to mimic the fibrous organization and tensile properties of different tendons/ligaments.

Sponsoring Organization:
USDOE
OSTI ID:
1836137
Journal Information:
Journal of Applied Polymer Science, Journal Name: Journal of Applied Polymer Science Journal Issue: 17 Vol. 139; ISSN 0021-8995
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United States
Language:
English

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