Difficult reptation of star-shaped polystyrenes in their blends with poly(methyl methacrylate)

Dondos, Anastasios; Christopoulou, V.; Papanagopoulos, D.

doi:10.1002/1521-3927(20001001)21:15<1086::aid-marc1086>3.0.co;2-q

Cited by 1 publication

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A plausible explanation of this effect is that the mobility of a star polymer is lower than the linear one due to higher number of entanglements. [32][33][34] However, no order with respect to the number of arms was observed. This should be attributed to other minor differences in the microstructure of the stars such as size of PDVB cores, distribution of the junction points of the arms, polydispersity in the number of arms, length and size distribution of the PEO arms, which it is not possible to keep constant for all samples.…”

Section: Discussionmentioning

confidence: 99%

Amorphous‐Crystalline PS_nPEO_n Heteroarm Star Copolymers: Crystallinity and Crystallization Kinetics

Koutsopoulou¹,

Tsitsilianis²

2004

Macro Chemistry & Physics

View full text Add to dashboard Cite

Summary: The crystallization behavior and kinetics of poly(ethylene oxide) in polystyrene/poly(ethylene oxide) heteroarm star copolymers were studied by differential scanning calorimetry and optical microscopy. A comparison between star and linear amorphous‐crystalline block copolymers showed that the macromolecular architecture is an important factor affecting crystallinity. The following points were observed: the equilibrium melting point is higher in the star copolymers, the crystallinity reduces as the number of arms increases, leading to smaller and ill‐defined spherulites, and crystallization proceeds faster in linear copolymers at low supercooling.Half crystallization times, t1/2, calculated from the Avrami analysis of the latent heats, obtained during the isothermal crystallization experiments as a function of supercooling, ΔT, for all copolymers.magnified imageHalf crystallization times, t1/2, calculated from the Avrami analysis of the latent heats, obtained during the isothermal crystallization experiments as a function of supercooling, ΔT, for all copolymers.

show abstract

Section: Discussionmentioning

confidence: 99%

Amorphous‐Crystalline PS_nPEO_n Heteroarm Star Copolymers: Crystallinity and Crystallization Kinetics

Koutsopoulou¹,

Tsitsilianis²

2004

Macro Chemistry & Physics

View full text Add to dashboard Cite

show abstract

Difficult reptation of star-shaped polystyrenes in their blends with poly(methyl methacrylate)

Cited by 1 publication

References 10 publications

Amorphous‐Crystalline PS_nPEO_n Heteroarm Star Copolymers: Crystallinity and Crystallization Kinetics

Amorphous‐Crystalline PS_nPEO_n Heteroarm Star Copolymers: Crystallinity and Crystallization Kinetics

Contact Info

Product

Resources

About

Difficult reptation of star-shaped polystyrenes in their blends with poly(methyl methacrylate)

Cited by 1 publication

References 10 publications

Amorphous‐Crystalline PSnPEOn Heteroarm Star Copolymers: Crystallinity and Crystallization Kinetics

Amorphous‐Crystalline PSnPEOn Heteroarm Star Copolymers: Crystallinity and Crystallization Kinetics

Contact Info

Product

Resources

About

Amorphous‐Crystalline PS_nPEO_n Heteroarm Star Copolymers: Crystallinity and Crystallization Kinetics

Amorphous‐Crystalline PS_nPEO_n Heteroarm Star Copolymers: Crystallinity and Crystallization Kinetics