High density polyethylene and zirconium phosphate nanocomposites

Lino, Adan Santos; Mendes, Luís Claudio; Silva, Daniela de França da; Malm, Olaf

doi:10.1590/0104-1428.2030

Cited by 15 publications

(7 citation statements)

References 24 publications

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“…Figure 14 shows the overlay of WAXD curves of the materials. According to literature, 35–37 the main reflection angles of HDPE are related to the crystallographic hkl plans (110) – 2θ = 22° and (200) – 2θ = 24°; and the main reflection angle of SCB is on 2θ = 22°. 13,38 In order to assess the influence of the SCB in the crystalline arrangement of the rHDPE, we used the data from 2θ angle at 24°.…”

Section: Resultsmentioning

confidence: 99%

Advanced properties of composites of recycled high-density polyethylene and microfibers of sugarcane bagasse

Cestari

Albitres

Mendes

et al. 2017

Journal of Composite Materials

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Aiming to systematically convert post-consumer plastics in building materials, we compounded recycled high-density polyethylene and sugarcane bagasse. We ranged the polymer/filler ratio from 100/0 to 60/40, and assessed the properties using optical microscopy, water absorption test, adhesion by tape test, low-field nuclear magnetic resonance, dynamic-mechanical analysis, and wide-angle X-ray diffractometry. The optical microscopy of the triturated bagasse showed the reduced and heterogeneous fiber sizes. The absorption and adhesion test showed that the polymer more heavily filled with bagasse can better absorb and anchor paint with organic solvent base. The dynamic-mechanical analysis and wide-angle X-ray diffractometry led us to believe that the bagasse fibers somehow structured the amorphous region amongst the crystallized lamellae of the polymeric matrix. We concluded that these composites have interesting properties to produce building materials.

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Section: Resultsmentioning

confidence: 99%

Advanced properties of composites of recycled high-density polyethylene and microfibers of sugarcane bagasse

Cestari

Albitres

Mendes

et al. 2017

Journal of Composite Materials

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“…Their application as filler for polymer nanocomposites enabled the publication of some articles. 18,19,20,28 The hkl plane related to the basal spacing of ZrP is located around 12.0°. After the admittance of octadecylamine inside ZrP galleries, this diffraction angle was absent and new reflection angles appeared around 6.0; 7.5 and 9.8° for nano-ZrPOct.…”

Section: Resultsmentioning

confidence: 99%

Nanocomposite of polypropylene/octadecylamine lamellar-zirconium phosphate: Influence of nanofiller and screw speed

Mariano

Freitas

Mendes

2017

Journal of Composite Materials

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Nanocomposite based on polypropylene and octadecylamine-modified lamellar-zirconium phosphate (PP/nano-ZrPOct) was prepared by melt processing. The action of the nanofiller and screw speed on the properties were evaluated. SEM images revealed that at highest screw speed, the higher nano-ZrPOct dispersion was achieved. In WAXD diffractrograms, some nanofiller diffraction peaks disappeared and a new peak was observed at low angle. There was evidence of increase of thermal stability although only discrete increasing in initial degradation temperature has been noticed. Melting and crystallization temperatures were invariable but crystallinity degree was influenced with a decreasing behavior at highest screw speed. The results strongly evidenced that the intercalation of the PP chains inside the nano-ZrPOct galleries and some degree of delamination of the nanofiller platelets have been achieved.

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“…They presented generic chemical formula M(RPO 3 ) 2 where M is a tetravalent metal for instance, titanium (Ti), zirconium (Zr), hafnium (Hf), germanium (Ge), tin (Sn), plumb (Pb), torium (Th) and R can be hydrogen atom, hydroxyl group or an organic moiety 4,5 . There are several articles devoted to the synthesis of lamellar zirconium phosphate (α-ZrP) and zirconium compounds for application in polymer nanocomposites and so on [6][7][8][9][10][11][12][13] . Due to their crystalline lamellar structure and the presence of acid groups inside the galleries, they allow the anchoring of intercalant in order to expand their lamellae.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Structural, Morphological and Relaxometric Properties of Lamellar Zrp Modified with Long Chain Amine

Mariano¹,

Freitas²,

Mendes³

et al. 2019

Mat. Res.

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In order to search nanofiller for controlling release of drugs lamellar α-zirconium phosphate (α-ZrP) was modified with ether-amine oligomer (E-A). Synthesis and chemical modification followed specific reaction conditions and different EA:ZrP ratios. Infrared spectra showed strong interaction between P-OH and NH 2 groups. Thermogravimetric curves showed that ether-amine oligomer was incorporated by ZrP. Interlamellar space of α-ZrP increased at least four times indicating intercalation. The relaxometry analysis indicated that α-ZrP molecular mobility changed according to the etheramine amount. The scanning electron microscopy/energy dispersive analysis revealed the presence of octadecylamine inside the α-ZrP galleries. The results showed that P-OH group (Brønsted acid) and amine group (Brønsted base) reacted to each other, resulting in an ionic bond PO-+ 3 HN-[-(CH 2-CH 2-O) m-(CH 2-C-H(CH 3)-O) n-]. Partially intercalated nanofiller were achieved.

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High density polyethylene and zirconium phosphate nanocomposites

Cited by 15 publications

References 24 publications

Advanced properties of composites of recycled high-density polyethylene and microfibers of sugarcane bagasse

Advanced properties of composites of recycled high-density polyethylene and microfibers of sugarcane bagasse

Nanocomposite of polypropylene/octadecylamine lamellar-zirconium phosphate: Influence of nanofiller and screw speed

Investigation on Structural, Morphological and Relaxometric Properties of Lamellar Zrp Modified with Long Chain Amine

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