Scaffold development using selective laser sintering of polyetheretherketone–hydroxyapatite biocomposite blends

Tan, Kai Liang; Chua, Chee Kai; Leong, Kah Fai; Cheah, C.M.; Cheang, P.; Bakar, M.S. Abu; Cha, Sang-Hyup

doi:10.1016/s0142-9612(03)00131-5

Cited by 563 publications

(332 citation statements)

References 25 publications

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“…HT-LS of PEEK also relies on a lower processing temperature window than PEK, the current commercial HT-LS material, due to a 30˚ C lower melting temperature between PEK and PEEK. Experimental studies on laser sintering of PEEK are not the main topic of this paper and can be found elsewhere [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Predicting processing parameters in high temperature laser sintering (HT-LS) from powder properties

2016

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New materials for Laser Sintering (LS) are usually developed using a trial and-error approach that consists of a series of builds within LS systems. This strategy is time consuming, costly and focuses only on the optimisation of the processing parameters, ignoring the powder properties of the materials under examination. Being able to predict processing parameters on the basis of the powder material properties would enable a faster development of new materials and new applications, while acknowledging a more in-depth understanding of the mechanisms involved in LS. This paper provides new results into the prediction of processing conditions from the material properties. It is here shown that high temperature polymers such as Poly Ether Ether Ketone (PEEK) and Poly Aryl Ether Ketone (PEK) can be successfully used in LS despite the lack of a super-cooling window. The evaluation of the stable sintering region of PEEK 450PF and the application the energy melt ratio parameter in relation to the mechanical performance of laser sintered PEEK samples are also provided. Lastly, a new method for estimating the powder bed temperature is proposed.

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Section: Introductionmentioning

confidence: 99%

Predicting processing parameters in high temperature laser sintering (HT-LS) from powder properties

2016

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“…HA is a calcium phosphate (CaP) material that is chemically similar to the inorganic component of bone matrix and can promote apatite deposition and bone cell attachment [13]. It has been demonstrated that SLS can be used for fabrication of physically blended HA-poly (ether-ether-ketone) (PEEK) and HA-poly (vinyl alcohol) composites for tissue scaffold development with micropores on the scaffold surface [14]. The ultimate compressive strength and elastic modulus for HA-poly-(L-lactic acid) (PLLA) parts fabricated by SLS was found within the lower limits of reported values for cancellous bone [6].…”

Section: Introductionmentioning

confidence: 99%

Powder bed generation in integrated modelling of additive layer manufacturing of orthopaedic implants

Krzyżanowski

Svyetlichnyy

Stevenson

et al. 2016

Int J Adv Manuf Technol

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This paper presents an original model of powder bed generation developed within the frame of an integrated modelling approach for studying the interaction of physical mechanisms in additive layer manufacturing (ALM) of orthopaedic implants. The model is based on cellular automata (CA) approach and describes the relationship between moving particles of different sizes during deposition on a surface in three dimensions. The surface is defined by the horizontal two-dimensional CA on which particles fall and irreversibly stick to a growing deposit. The model allows for consideration of different restructuring cases when particles are allowed to rotate as often as necessary until achievement of a local minimum position. Changes in the packing density of the powder bed have been investigated numerically depending on technological parameters, such as particle size distribution, deposition rate and sequence of powder deposition. The model has been developed with the aim of merging to the finite element (FE)-based integrated model and is applicable to a different ranges of materials including metals and also non-metals.

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“…Polycaprolactone (PCL) is investigated most extensively for scaffolds fabricated via laser sintering [2][3][4][5][6]. Other materials include poly(methyl methacrylate) (PMMA), polyetheretherketone (PEEK) [7], polylactide acid PLA [8] and poly(lactic-co-glycolide) (PLG) [9].…”

Section: Laser Sintering For Tissue Engineering Applicationsmentioning

confidence: 99%

“…Hydroxyapatide (HA), for instance, is known for its bioactive behaviour and osteoconductivity. HA has been blended with PCL, PE, PEEK, and polyvinylalcohol (PVA), and the compound powders have been processed via laser sintering [6,7,13,14].…”

Section: Compositesmentioning

confidence: 99%

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Laser Sintering for the Fabrication of Tissue Engineering Scaffolds

Lohfeld

McHugh

2012

Methods in Molecular Biology

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Scaffold development using selective laser sintering of polyetheretherketone–hydroxyapatite biocomposite blends

Cited by 563 publications

References 25 publications

Predicting processing parameters in high temperature laser sintering (HT-LS) from powder properties

Predicting processing parameters in high temperature laser sintering (HT-LS) from powder properties

Powder bed generation in integrated modelling of additive layer manufacturing of orthopaedic implants

Laser Sintering for the Fabrication of Tissue Engineering Scaffolds

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