Modifications of rigid rod poly(1,4-phenylene-cis-benzobisoxazole) fibers by gas plasma treatments

Wu, G.M.; Chang, C. H.

doi:10.1016/j.vacuum.2007.01.007

Cited by 23 publications

(15 citation statements)

References 10 publications

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“…From Fig. 3, the bands at 1500 and 1620 cm 21 can be assigned to the stretching vibration peaks of C5C of benzene ring. The bands at 1260, 1410, and 1680 cm 21 can be assigned to the vibration peaks of C-N, C-C, and C5N, respectively.…”

Section: Resultsmentioning

confidence: 98%

“…After the surface functionalization of KH550, the bands at 650, 1100, and 2940 cm 21 can be assigned to the new characteristic vibration peaks of Si-C, Si-O, and C-H groups in KH550, respectively. And the appearance of new double absorption peaks at 3300-3500 cm 21 can be assigned to the stretching vibration of primary amine (-NH 2 ) in KH550. It demonstrates that the KH550 has successfully grafted onto the surface of HMPBO fibers.…”

Section: Ftir Analysismentioning

confidence: 99%

“…Fourier transform infrared (FTIR) spectra were obtained on Bruker Tensor 27 equipment (Bruker Corporation, Germany). Transition mode was used and the wave-number range was set from 4000 cm 21 to 400 cm 21 . The thermo-gravimetric analyses of samples were performed using a thermoanalyzer (STA 449F3, Netzsch Group, Germany) in the temperature range of 40-1000 C with a heating rate of 20 K/min under argon atmosphere and a gas flow of 150 mL/min.…”

Section: Analysis and Characterizationmentioning

confidence: 99%

“…However, the interfacial adhesion of PBO fibers to epoxy resin is poor . Different methods have been proposed to improve the interfacial adhesion between PBO fibers and epoxy resin, including chemical treatment , plasma treatment , enzymatic treatment , γ‐ray irradiation treatment , corona discharge , coupling agent treatment, and the combination treatment of several methods , and so on.…”

Section: Introductionmentioning

confidence: 99%

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Surface functionalization of HMPBO fibers with MSA/KH550/GlycidylEthyl POSS and improved interfacial adhesion

Bai

Dang

et al. 2013

Polymer Composites

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A novel “three‐step approach” of methanesulfonic acid/γ‐aminopropyl triethoxy silane/GlycidylEthyl polyhedral oligomeric silsesquioxane (MSA/KH550/POSS) was proposed to functionalize the surface of high modulus poly (p‐phenylene‐2,6‐benzobisoxazole) (HMPBO) fibers. Results indicated that GlycidylEthyl POSS was successfully grafted on the surface of HMPBO fibers and the surface roughness of HMPBO fibers was increased obviously. The single fiber pull‐out strength of POSS‐g‐HMPBO/epoxy resin microcomposite was improved to 1.19 MPa, better than that of native HMPBO/epoxy resin microcomposite. POLYM. COMPOS., 35:611–616, 2014. © 2013 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 98%

Section: Ftir Analysismentioning

confidence: 99%

Section: Analysis and Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Surface functionalization of HMPBO fibers with MSA/KH550/GlycidylEthyl POSS and improved interfacial adhesion

Bai

Dang

et al. 2013

Polymer Composites

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“…Similar to the dyeing property, compatibility problems of PBO with other polymers have puzzled academia and industry. Therefore, since the invention of PBO fiber, many researchers continuously have made progress in the field of PBO surface modification, based on the need as reinforced materials [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

New disperse dyeing method of poly(p-phenylene benzobisoxazole) fiber pretreated with polyphosphoric acid

Mao

Guan

Zhu

2015

Korean J. Chem. Eng.

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Poly(p-phenylene benzobisoxazole) fiber is considered as a high-performance fiber because of its high strength and excellent thermal and chemical stability. It has been used in industrial reinforcement, body armor and military camouflage. But the application of poly(p-phenylene benzobisoxazole) fiber used for protective clothing is limited because it is difficult to dye with conventional dyeing processes. In this work, a carrier dyeing method with disperse dyes was first used to dye the fiber after a pretreatment with polyphosphoric acid. The effects of the carrier structure and dyeing conditions on the color strength of dyed samples were investigated. In addition, the crystallinity and orientation degree of the poly(p-phenylene benzobisoxazole) fibers before and after pretreatment with phthalimide and benzyl benzoate were measured by X-ray diffraction and velocity-oriented test, respectively. The results suggested phthalimide and benzyl benzoate, as carrier, could effectively promote disperse dyeing of the PBO fiber pretreated with polyphosphoric acid. Meanwhile, the optimal conditions for the carrier dyeing were obtained, that is, concentration of carrier 4%, dyeing temperature 150 o C and time 120 min. By way of the carrier dyeing, the K/S value of dyed sample and the percentage of dye exhaustion were greatly improved, while the crystalline structure and orientation degree of the pretreated samples hardly changed. Furthermore, the decreases of the tensile strength and the limiting oxygen index of dyed poly(p-phenylene benzobisoxazole) sample were very little, and the color fastness was also satisfactory.

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Influence of oxygen plasma treatment on interfacial properties of poly(p‐phenylene benzobisoxazole) fiber‐reinforced poly(phthalazinone ether sulfone ketone) composite

Zhang¹,

Chen²,

Sun³

et al. 2009

J of Applied Polymer Sci

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The influence of oxygen plasma treatment on both surface properties of poly(p-phenylene benzobisoxazole) (PBO) fibers and interfacial properties of PBO fiber reinforced poly(phthalazinone ether sulfone ketone) (PPESK) composite were investigated. Surface chemical composition, surface roughness, and surface morphologies of PBO fibers were analyzed by X-ray photoelectron spectroscopy (XPS), Atomic force microscopy (AFM), and scanning electron microscopy (SEM), respectively. Surface free energy of the fibers was characterized by dynamic contact angle analysis (DCAA). The interlaminar shear strength (ILSS) and water absorption of PBO fiber-reinforced PPESK composite were measured. Fracture mechanisms of the composite were examined by SEM. The results indicated that oxygen plasma treatment significantly improved the interfacial adhesion of PBO fiber-reinforced PPESK composite by introducing some polar or oxygen-containing groups to PBO fiber surfaces and by fiber surface roughening.

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Modifications of rigid rod poly(1,4-phenylene-cis-benzobisoxazole) fibers by gas plasma treatments

Cited by 23 publications

References 10 publications

Surface functionalization of HMPBO fibers with MSA/KH550/GlycidylEthyl POSS and improved interfacial adhesion

Surface functionalization of HMPBO fibers with MSA/KH550/GlycidylEthyl POSS and improved interfacial adhesion

New disperse dyeing method of poly(p-phenylene benzobisoxazole) fiber pretreated with polyphosphoric acid

Influence of oxygen plasma treatment on interfacial properties of poly(p‐phenylene benzobisoxazole) fiber‐reinforced poly(phthalazinone ether sulfone ketone) composite

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