Preparation and properties of organo‐modifier free PET/MMT nanocomposites via monomer intercalation and <i>in situ</i> polymerization

Chen, Zhaojun; Luo, Peng; Fu, Qiang

doi:10.1002/pat.1336

Cited by 24 publications

(32 citation statements)

References 33 publications

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“…The similar reaction process can be found in our previous literature. 23 Then, the composites were extruded from the reactor by compressed nitrogen and cut into pellets. The contents of SMCW were 1, 3, and 5 wt %, respectively.…”

Section: Materials and Sample Preparationmentioning

confidence: 99%

Preparation and properties of poly(ethylene terephthalate)/inorganic whiskers composites

Li¹,

Luo²,

Li³

et al. 2011

J of Applied Polymer Sci

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To improve the crystallization and mechanical properties of poly(ethylene terephthalate) (PET), in this work, PET/SiO 2 -MgO-CaO whiskers composites were prepared via in situ polymerization. The morphology, crystallization, and mechanical properties of the prepared composites were investigated. It was found that inorganic whiskers could be easily dispersed in PET matrix, as demonstrated by SEM and PLM. DSC and PLM observation indicated a strong nucleation capability of inorganic whiskers for PET. Mechanical analysis results showed that the glass transition temperature, tensile strength, and modulus of the composites were greatly improved. A possible chemical bonding between PET chains and the surface of whiskers was observed by FTIR, TGA, and sedimentation experiment. It could be the main reason for the good dispersion and improved properties of the prepared composites. This work is important for the application of PET due to the low cost but high reinforcing efficiency of this inorganic whisker.

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Section: Materials and Sample Preparationmentioning

confidence: 99%

Preparation and properties of poly(ethylene terephthalate)/inorganic whiskers composites

Li¹,

Luo²,

Li³

et al. 2011

J of Applied Polymer Sci

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“…There are two melting endotherms that could be observed in each PET nanocomposite sample. It is suggested that the lower one represents the melting of imperfect or smaller crystals, and the higher one represents more perfect bigger crystallites [28,29]. It is interesting that with the content of AT or MAT increasing from 1 to 2 wt%, the melting peak that is located at the low temperature becomes more distinct and increscent.…”

Section: Thermal Propertiesmentioning

confidence: 99%

Rod like attapulgite/poly(ethylene terephthalate) nanocomposites with chemical bonding between the polymer chain and the filler

Chen¹,

Liu²,

Jin³

et al. 2012

Express Polym. Lett.

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IntroductionPoly(ethylene terephthalate) (PET) is a semicrystalline polymer with excellent chemical resistance, thermal stability, and spinnability. Due to its low cost and high performance, PET is in widespread use in our modern life, ranging from textile fibers, films, bottles containers and food packaging materials to engineering plastics, etc. However, numerous shortcomings such as low rate of crystallization, long cycle times for injection moulding, low melt strength and low distortion temperature limit its application [1,2]. To meet the practical needs and improve its performance, the addition of inorganic filler into PET matrix has been a research focus, and dramatic enhancements in properties such as their mechanical, gas barrier property and thermal property can be achieved [3][4][5][6][7][8][9][10][11][12][13]. These enhancements result from homogeneous dispersion of nanoparticles in polymer matrix and the interaction between the nanoparticles and PET matrix. The in situ polymerization technique is particularly attractive, which enables to exercise control over both the polymer architecture and the final structure of the composites. Recently various nanoparticles have been applied in the preparation of PET nanohybrids via in situ polymerization or melt mixing, including layered silicates montmorillonite (MMT) [3][4][5][6], spherical silica [7,8] Abstract. Poly(ethylene terephthalate) (PET) nanocomposites containing rod-like silicate attapulgite (AT) were prepared via in situ polymerization. It is presented that PET chains identical to the matrix have been successfully grafted onto simple organically pre-modified AT nanorods (MAT) surface during the in situ polymerization process. The covalent bonding at the interface was confirmed by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The content of grafted PET polymer on the surface of MAT was about 26 wt%. This high grafting density greatly improved the dispersion of fillers, interfacial adhesion as well as the significant confinement of the segmental motion of PET, as compared to the nanocomposites of PET/pristine AT (PET/AT). Owing to the unique interfacial structure in PET/MAT composites, their thermal and mechanical properties have been greatly improved. Compared with neat PET, the elastic modulus and the yield strength of PET/MAT were significantly improved by about 39.5 and 36.8%, respectively, by incorporating only 2 wt % MAT. Our work provides a novel route to fabricate advanced PET nanocomposites using rod-like attapulgite as fillers, which has great potential for industrial applications.

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“…The gray area represented the PET matrix, and the dark regions referred to the silicate layers. The SMA ionomers could react with PET chain end to form clusters [21], and the OMMTs could provide more interfaces for PET crystal nucleus growing, thus accelerating the PET crystallization [16][17][18][19]. But only the exfoliated OMMTs are well dispersed in PET matrix, could they form enough nucleating sites within a semi-crystalline PET matrix and, hence, a quick crystallization rate and a high degree of crystallization are attained due to the presence of OMMT [20].…”

Section: Characterization Of Smns and Imsmentioning

confidence: 97%

“…Many literatures reported that the organic montmorillonite (OMMT) platelets within PET matrix can act as effective nucleating agent through in situ polymerization [16] or melt blending [17][18][19]. Qi et al [16] reported that the crystallization rate of PET-clay nanocomposites prepared by intercalation, followed by in situ polymerization was three times greater than that of pure PET.…”

Section: Introductionmentioning

confidence: 97%

In situ polymerization of poly(styrene- alt -maleic anhydride)/organic montmorillonite nanocomposites and their ionomers as crystallization nucleating agents for poly(ethylene terephthalate)

Xing

et al. 2016

Journal of Industrial and Engineering Chemistry

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Preparation and properties of organo‐modifier free PET/MMT nanocomposites via monomer intercalation and in situ polymerization

Cited by 24 publications

References 33 publications

Preparation and properties of poly(ethylene terephthalate)/inorganic whiskers composites

Preparation and properties of poly(ethylene terephthalate)/inorganic whiskers composites

Rod like attapulgite/poly(ethylene terephthalate) nanocomposites with chemical bonding between the polymer chain and the filler

In situ polymerization of poly(styrene- alt -maleic anhydride)/organic montmorillonite nanocomposites and their ionomers as crystallization nucleating agents for poly(ethylene terephthalate)

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