Ion-containing polymers: 1. Synthesis and properties of poly(1,4-butylene isophthalate) containing sodium sulfonate groups

Pilati, Francesco; Manaresi, P.; Ruperto, M.G.; Bonora, V.; Munari, Andrea; Fiorini, Maurizio

doi:10.1016/0032-3861(93)90830-4

Cited by 9 publications

(5 citation statements)

References 36 publications

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“…As re- ported in the literature, two main reasons are invoked to explain the increase of T g of ionomers: the ionic interactions leading to ion-clustering or physical crosslinks and the introduction of bulky sulfonate groups and from hydrogen bond interaction. As demonstrated previously, 7,16,17 in the case of polymeric samples containing SO 3 Na groups, the contribution from ionic aggregations seems to be negligible, the increment of T g appearing more likely to be the result of internal chain stiffening due to the presence of sulfonate comonomeric units. Therefore, it is highly probable that ion-clustering effects can be ruled out also for the samples under investigation.…”

Section: Resultsmentioning

confidence: 70%

“…An analogous trend was found by some of us in investigating PBI containing SO 3 Na groups only. 7 On the contrary, the analysis of the effect of branching point on the thermal stability of PBI carried out previously evidenced no significant variations. 5 Nevertheless, it has to be pointed out that those samples were characterized by a lower content of branching units and the absence of ionic groups.…”

Section: Resultsmentioning

confidence: 91%

“…6 In this view, previously some of us also synthesized a series of random copolyesters derived from isophthalic acid and containing various amounts of sodium sulfonate groups, which have been characterized from the point of view of molecular, thermal, and rheological properties. 7,8 It appeared interesting to complete the previous works by synthesizing polymers characterized by the presence into the PBI backbone both of branching and sodium sulfonate groups (PBI-BS). In this view, two series of PBI-BS samples were prepared, the former containing a fixed amount of branching units and the latter characterized by a constant sulfonated unit content, with the aim of establishing relationship between the thermal properties of PBI-BS and polymer composition.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and thermal properties of randomly branched poly(butylene isophthalate) containing sodium sulfonate groups

Finelli

Siracusa

Lotti

et al. 2005

J of Applied Polymer Sci

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ABSTRACT:Randomly branched poly(butylene isophthalate) samples containing sodium sulfonate groups were prepared from dimethyl isophthalate, 3,5-bis(carbomethoxycarbonyl) benzene sulfonate, tris(hydroxyethyl) isocyanurate, and 1,4-butanediol, according to the well-known twostage polycondensation procedure. The polymers, containing various amounts of branching units and ionic groups, demonstrated to be soluble in the most common organic solvents, an evidence that gelation was not reached under the polymerization conditions adopted. The thermal behavior was examined by thermogravimetric analysis and differential scanning calorimetry. The sulfonate as well as the branching units had only a limited effect on the thermal stability, which slightly decreased with respect to pure poly(butylene isophthalate). The analysis carried out using DSC technique showed that the T m of the copolymers decreased with increasing counit content, differently from T g , which, on the contrary, increased. Baur's equation was found to describe well the T m -composition data.

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Section: Resultsmentioning

confidence: 70%

Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

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Synthesis and thermal properties of randomly branched poly(butylene isophthalate) containing sodium sulfonate groups

Finelli

Siracusa

Lotti

et al. 2005

J of Applied Polymer Sci

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“…According to Turner-Jones [6][7][8][9][10][11][12] formula can be calculated from the relative content of β beta crystal: Type, α beta (300) for the WAXD curve of beta crystal (300) surface diffraction peak to the selected background curve peak height; alpha (110), alpha (040), alpha (130) respectively for a crystal (110), (040), (130) the diffraction peak high. Which can be seen in Table 1, with the increase of the LCP-A content, K beta showed increased first and then reduced.…”

Section: Blend Sample Analysis Of Crystal Structure Inucleating Agent...mentioning

confidence: 99%

Study on Crystallization Behavior of Liquid Crystalline Polyacrylates Induced Isotactic Polypropylene

Chen

2012

AMM

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A series of polypropylene (PP) blends were obtained by blending isotactic PP and different mass fraction of liquid crystalline polyacylates (LCP-A) at a proper process program. The effect of LCP-A as a new nucleator on crystallization behacior of isotactic PP has been investigated with wide angle X-ray diffraction (WAXD), polarized optical microscopy (POM) and differential scanning calorimetry (DSC). The experimental results showed that LCP-A in the PP played a role in the heterogeneous nucleation effect, supplied much crystal nucleus, enhanced the crystallization velocity and temperature, and the spherulites became smaller and more homogeneous. Moreover, β-phase in the PP was induced. In addition, the relative content of β-crystal (Kβ) increased with increasing LCP-A content or crystallization temperature, reached a maximum value, and then decreased as the temperature or LCP-A content further increased. Kβ of PP with 0.8% LCP-A isothermally crystallized at 125°C for 1h was 21%. POM results that showed the morphology of β and α spherulite disappeared at 156°C and 172°C, respectively.

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“…The sulfonated polyesters constitute the most studied ionic polymer family. Indeed, the incorporation of sulfonated groups into the structure of aromatic polyesters, mainly PET and PBT, has been the subject of many researches for nearly three decades [1][2][3]. PET containing small amounts of sulfonated units has been known for a long time.…”

Section: Introductionmentioning

confidence: 99%

Fully Biobased Aliphatic Anionic Oligoesters: Synthesis and Properties

kacem

Bougarech

Abid

et al. 2019

International Journal of Polymer Science

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Biobased aliphatic sulfonated oligoesters with 10 to 30% of sulfonated units were synthesized by melt polycondensation of biobased monomers such as diethyl succinate, z-octadec-9-enedioic acid, dimer fatty acid, sodium (sulfonated dimethyl succinate), and various diols like 1,4-butane diol and isosorbide. Structural characterization of the resulting oligoesters was determined by 1H NMR spectroscopy and MALDI-TOF MS technique. Showing a regular structure, the nature of the different expected species present in the macromolecular structure allowed the detection of etherification and cyclisation side reactions. The study of the thermal properties indicates that the resulting oligoesters are amorphous or semicrystalline that essentially depend on the nature of monomers. Films of oligoesters treated in acidic, basic, and natural media at 37°C indicate that the remaining weight depends essentially on the composition of oligoesters. Finally, sulfonated oligoester was used to prepare a biobased poly(ester-urethane) thermoset, a material having tunable properties.

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Ion-containing polymers: 1. Synthesis and properties of poly(1,4-butylene isophthalate) containing sodium sulfonate groups

Cited by 9 publications

References 36 publications

Synthesis and thermal properties of randomly branched poly(butylene isophthalate) containing sodium sulfonate groups

Synthesis and thermal properties of randomly branched poly(butylene isophthalate) containing sodium sulfonate groups

Study on Crystallization Behavior of Liquid Crystalline Polyacrylates Induced Isotactic Polypropylene

Fully Biobased Aliphatic Anionic Oligoesters: Synthesis and Properties

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