دورية أكاديمية
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Characterization of Porous β-Type Tricalcium Phosphate Ceramics Formed via Physical Foaming with Freeze-Drying.

التفاصيل البيبلوغرافية
العنوان: Characterization of Porous β-Type Tricalcium Phosphate Ceramics Formed via Physical Foaming with Freeze-Drying.
المؤلفون: Hashimoto K; Department of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino-shi 275-0016, Chiba, Japan., Oikawa H; Department of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino-shi 275-0016, Chiba, Japan., Shibata H; Department of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino-shi 275-0016, Chiba, Japan.
المصدر: International journal of molecular sciences [Int J Mol Sci] 2024 May 14; Vol. 25 (10). Date of Electronic Publication: 2024 May 14.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: MDPI Country of Publication: Switzerland NLM ID: 101092791 Publication Model: Electronic Cited Medium: Internet ISSN: 1422-0067 (Electronic) Linking ISSN: 14220067 NLM ISO Abbreviation: Int J Mol Sci Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Basel, Switzerland : MDPI, [2000-
مواضيع طبية MeSH: Freeze Drying*/methods , Calcium Phosphates*/chemistry , Ceramics*/chemistry, Porosity ; Surface-Active Agents/chemistry ; Materials Testing ; X-Ray Diffraction
مستخلص: Porous β-tricalcium phosphate (Ca 3 (PO 4 ) 2 ; β-TCP) was prepared via freeze-drying and the effects of this process on pore shapes and sizes were investigated. Various samples were prepared by freezing β-TCP slurries above a liquid nitrogen surface at -180 °C with subsequent immersion in liquid nitrogen at -196 °C. These materials were then dried under reduced pressure in a freeze-dryer, after which they were sintered with heating. Compared with conventional heat-based drying, the resulting pores were more spherical, which increased both the mechanical strength and porosity of the β-TCP. These materials had a wide range of pore sizes from 50 to 200 µm, with the mean and median values both approximately 100 µm regardless of the freeze-drying conditions. Mercury porosimetry data showed that the samples contained small, interconnected pores with sizes of 1.24 ± 0.25 µm and macroscopic, interconnected pores of 25.8 ± 4.7 µm in size. The effects of nonionic surfactants having different hydrophilic/lipophilic balance (HLB) values on foaming and pore size were also investigated. Materials made with surfactants having lower HLB values exhibited smaller pores and lower porosity, whereas higher HLB surfactants gave higher porosity and slightly larger macropores. Even so, the pore diameter could not be readily controlled solely by adjusting the HLB value. The findings of this work indicated that high porosity (>75%) and good compressive strength (>2 MPa) can both be obtained in the same porous material and that foaming agents with HLB values between 12.0 and 13.5 were optimal.
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فهرسة مساهمة: Keywords: cellulose nanofiber; freeze-drying; hydrophilic/lipophilic balance (HLB); nonionic surfactants; physical foaming method; porous β-tricalcium phosphate
المشرفين على المادة: 0 (Calcium Phosphates)
0 (beta-tricalcium phosphate)
0 (Surface-Active Agents)
تواريخ الأحداث: Date Created: 20240525 Date Completed: 20240525 Latest Revision: 20240527
رمز التحديث: 20240527
مُعرف محوري في PubMed: PMC11120988
DOI: 10.3390/ijms25105363
PMID: 38791401
قاعدة البيانات: MEDLINE
الوصف
تدمد:1422-0067
DOI:10.3390/ijms25105363