The Effect of Coagulant on the Structure and Properties of Poly(P-Phenylene Terephthalamide) [PPTA]

Rakas, M. A.; Farris, Richard J.

doi:10.1557/proc-134-277

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…The compressive strength of PBO fiber slowly coagulated in acetone was reported to be 300 MPa, compared to 100 MPa for fiber coagulated in water 208. Tensile and compressive strengths of PPTA fibers have been reported to decrease209 if coagulation takes place in ethanol or aqueous solutions of potassium iodide as opposed to water. The compressive strengths of heat‐treated PBO fibers coagulated in water, steam, methanol or ammonium hydroxide, were reported to be in the 200 to 300 MPa range 4…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Rigid‐Rod Polymers: Synthesis, Processing, Simulation, Structure, and Properties

Hu¹,

Jenkins

Min

et al. 2003

Macro Materials & Eng

174

105

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Synthesis, structure, and properties of rigid‐rod polymers with special emphasis on poly(p‐phenylene benzobisoxazole) (PBO) and poly(p‐phenylene benzobisthiazole) (PBZT) have been reviewed. Recent studies on chemical modifications and molecular simulations have also been given. After nearly 20 years of research and development, PBO fiber was commercialized in the late 1990s. However, due to processing difficulties, the concept of the so called molecular composites has not been successful. Development of the high compressive strength M5 and dihydroxy‐PBI fibers clearly suggest that there is potential for further developing properties of this class of materials. Opto‐electronic properties have also been reviewed.Synthesis of PBZT.magnified imageSynthesis of PBZT.

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Section: Mechanical Propertiesmentioning

confidence: 99%