Melting behavior of poly(butylene succinate) during heating scan by DSC

Yoo, Eui Sang; Im, Seung‐Soon

doi:10.1002/(sici)1099-0488(19990701)37:13<1357::aid-polb2>3.0.co;2-q

Cited by 267 publications

(223 citation statements)

References 35 publications

Supporting

Mentioning

197

Contrasting

Unclassified

Order By: Relevance

“…Additionally, the most striking feature in Figure 7B is that all the DSC melting traces of the copolyesters show bimodal melting peaks, whereas the DSC melting curve of PCL only reveals a single peak in the absence of (R,S)-BL. In general, these peaks are attributed to a crystalline reorganization via melting, re-crystallization and re-melting at higher temperature [8,[46][47][48].…”

Section: Differential Scanning Calorimetry (Dsc) and Wide Angle X-raymentioning

confidence: 62%

Ring-opening copolymerization of (R,S)-β-butyrolactone and ε-caprolactone using sodium hydride as initiator

Monsalve¹,

Contreras²,

Laredo³

et al. 2010

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. Copolymers of racemic β-butyrolactone ((R,S)-BL) and ε-caprolactone (CL), were synthesized by ring-opening polymerization initiated by sodium hydride (NaH). The initiator exhibited a satisfactory catalytic activity, producing copolymers whose yields are greatly influenced by the feed monomer ratio, CL/BL. All polymers obtained were characterized by nuclear magnetic resonance (NMR), gel permeation chromatography (GPC), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and wide angle X-rays scattering, WAXS. The molar composition of copolyesters determined by 1 H-NMR spectra, showed that the incorporation of CL is favoured over the incorporation of (R,S)-BL. Gel permeation chromatography and 13 C-NMR spectra indicated that CL/BL copolymers had block sequence distribution. The TGA analysis of copolymers showed that these copolymers are stable up to temperatures near 200°C, followed by a decomposition process in two steps; the first one is attributed to the (R,S)-BL block degradation and the second to the remaining PCL block. The crystallization process of these copolymers was studied by DSC and WAXS showing that the amorphous (R,S)-BL segments chains did not affect the crystallinity of the PCL blocks.

show abstract

Section: Differential Scanning Calorimetry (Dsc) and Wide Angle X-raymentioning

confidence: 62%

Ring-opening copolymerization of (R,S)-β-butyrolactone and ε-caprolactone using sodium hydride as initiator

Monsalve¹,

Contreras²,

Laredo³

et al. 2010

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…In fact, various investigators reported similar observations on a number of semicrystalline polymers, including some flexible polymers: polyethylene, 11,12 isotactic polypropylene (i-PP), 13,14 trans-1,4-polyisoprene, 15 and poly(butylene succinate) 16 ; and some semistiff polymers: aliphatic polyamides, [17][18][19] isotactic polystyrene (i-PS), 20 syndiotactic polystyrene and its blends, 21 poly-(ethylene terephthalate), [22][23][24][25][26][27] poly(butylene terephthalate), 28 -31 poly(phenylene sulfide), 32,33 and poly(aryl ether ether ketones). 34 -50 A number of hypotheses were proposed to explain the occurrence of multiple melting endotherms.…”

Section: Introductionmentioning

confidence: 86%

Crystallization and melting behavior in syndiotactic polypropylene: Origin of multiple melting phenomenon

Supaphol

2001

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT:The melting behavior of syndiotactic polypropylene (s-PP) after isothermal crystallization from the melt state was studied using differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) techniques. Three melting endotherms were observed for isothermal crystallization at high degrees of undercooling. The minor endotherm, located closed to the corresponding crystallization temperature, was postulated to be the melting of the secondary crystallites formed at the crystallization temperature. The low-temperature melting peak was found to be the melting of the primary crystallites formed, and the high-temperature melting peak was a result of the melting of the crystallites recrystallized during a heating scan. The triple-melting behavior observed in subsequent melting endotherms of s-PP was therefore described as contributions from melting of the secondary crystallites and their recrystallization, partial melting of the less stable fraction of the primary crystallites and their recrystallization, melting of the primary crystallites, and remelting of the recrystallized crystallites formed during the heating scan. In addition, determination of the equilibrium melting temperature for this s-PP resin according to the linear and nonlinear Hoffman-Weeks extrapolations provided values of 143.1 and 185.6°C, respectively.

show abstract

“…Some studies evidenced the presence of double crystallite regions produced by different morphologies 26,27 . This behavior was observed in some flexibles semicrystalline polymers such as polyethylene (PE) 28 , polypropylene (PP) 28 or semi-rigid polymer such as poly(ether-ether-ketone) Table 2.…”

Section: Characterization Of the Ape/tio 2 Nanocompositesmentioning

confidence: 99%

“…These materials can present two or more crystal modifications or, at least two groups with various lamellar structures, or even different crystalline morphologies 25 . These different structures can be formed in the isothermal crystallization process at temperatures much above the ambient (70°C-100°C) as observed for the poly (alkylene succinate) (80°C-100°C) 26,27 . In our study, at the end of the 2nd stage of synthesis (bulk polymerization), the APE started to solidify at temperatures much above the ambient (around 90 o C).…”

Section: Characterization Of the Ape/tio 2 Nanocompositesmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and properties of aromatic polyester/TiO2 nanocomposites from polyethylene terephthalate

et al. 2016

View full text Add to dashboard Cite

Melting behavior of poly(butylene succinate) during heating scan by DSC

Cited by 267 publications

References 35 publications

Ring-opening copolymerization of (R,S)-β-butyrolactone and ε-caprolactone using sodium hydride as initiator

Ring-opening copolymerization of (R,S)-β-butyrolactone and ε-caprolactone using sodium hydride as initiator

Crystallization and melting behavior in syndiotactic polypropylene: Origin of multiple melting phenomenon

Preparation and properties of aromatic polyester/TiO2 nanocomposites from polyethylene terephthalate

Contact Info

Product

Resources

About