A study of the yield and post‐yield behavior of syndiotactic polypropylene | Zendy

Marano Claudia | Zendy; Perillo Nadia | Zendy; Rink Marta | Zendy

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A study of the yield and post‐yield behavior of syndiotactic polypropylene

Author(s) -

Marano Claudia,

Perillo Nadia,

Rink Marta

Publication year - 2014

Publication title -

journal of polymer science part b: polymer physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.65

H-Index - 145

eISSN - 1099-0488

pISSN - 0887-6266

DOI - 10.1002/polb.23561

Subject(s) - tacticity , polypropylene , materials science , yield (engineering) , composite material , strain (injury) , ultimate tensile strength , strain rate , displacement (psychology) , polymer chemistry , polymer , polymerization , medicine , psychology , psychotherapist

The strain recovery of three syndiotactic polypropylenes (s‐PPs) differing in the percentage of [rrrr] pentad is investigated. A suitable method based on loading–unloading tests at constant displacement rate in tensile loading conditions is adopted to measure the residual and recovered strain components of the applied strain. The method allows to obtain a large amount of data from few tests and to explore a wide strain range. The dependence of the material's strain recovery on the applied strain is analyzed in relation to s‐PP strain‐induced microstructural changes and crystalline form transitions, which are reported in literature. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014 , 52 , 1276–1282

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