Thermal Stability of Shear-Induced Precursors and Their Effect on the Crystalline Structure of <i>β</i>-Nucleated Isotactic Polypropylene

<div>Evolution of the storage modulus <svg height="11.6425pt" id="M20" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -11.4361 12.8205 11.6425" width="12.8205pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M673 297H417L411 270C517 261 522 258 506 183L487 92C476 38 428 19 360 19C207 19 123 132 123 287C123 472 243 631 441 631C557 631 617 583 617 469L647 472C650 545 655 604 658 632C625 643 554 666 467 666C201 666 23 502 23 278C23 90 156 -16 339 -16C410 -16 501 6 569 24C566 43 567 70 573 101L589 183C604 259 607 262 667 271L673 297Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,8.892,-5.741)"><path d="M310 541L304 571C290 586 211 619 185 610L80 76L131 52L310 541Z"></path></g></svg> during isothermal crystallization at 135°C in (a) iPP and (b) <i>β</i>-nucleated iPP under quiescent, sheared, and partially relaxed conditions (<span class="nowrap"><svg height="11.7978pt" id="M21" 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International Journal of Polymer Science

fig2

Figure 2

Figure 2: Thermal Stability of Shear-Induced Precursors and Their Effect on the Crystalline Structure of <i>β</i>-Nucleated Isotactic Polypropylene 

International Journal of Polymer Science

Thermal Stability of Shear-Induced Precursors and Their Effect on the Crystalline Structure of β-Nucleated Isotactic Polypropylene

Figure 2