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<p>This study presents a method for preparing biobased cellulose diacetate (CDA)/polyester blends. The method involves melt blending CDA with polybutylene adipate (PBS), polybutylene adipate/terephthalate (PBAT), or poly-L-lactic acid (PLLA) without the addition of any small molecule plasticizers, with the inclusion of 0.5 phr phosphite antioxidant Bis-(2,4-di-tert-butyl phenyl) pentaerythritol diphosphite (BPE-DP). The ratio of cellulose acetate to polyester is 8:2, 7:3, 6:4, and 5:5. CDA, PBS, and PLLA are common bio-based plastics, and PBAT can also be produced using bio-based monomers. This study leverages the high glass transition temperature (T<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10570_2025_6439_Article_IEq1.gif" Format="GIF" Height="10" Rendition="HTML" Resolution="72" Type="Linedraw" Width="10" /> </InlineMediaObject> <EquationSource Format="TEX">\(_g\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mi>g</mi> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation>) of CDA to develop CDA/polyester blends with high melt fluidity and good resistance to heat-induced deformation, after addressing the challenges of hot processing without small molecule plasticizers. This material has the potential to be applied in high-heat environments, such as car engine, and can be fully bio-based.</p>

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Blends of cellulose diacetate and polyester: towards bioplastics with high melt flowability and good resistance to deformation at high temperature

  • 期刊论文

  • 发表日期：

    2025年2月19日

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  • Peipei Wu,
  • Guanyu Lu,
  • Shuangjun Chen

摘要

This study presents a method for preparing biobased cellulose diacetate (CDA)/polyester blends. The method involves melt blending CDA with polybutylene adipate (PBS), polybutylene adipate/terephthalate (PBAT), or poly-L-lactic acid (PLLA) without the addition of any small molecule plasticizers, with the inclusion of 0.5 phr phosphite antioxidant Bis-(2,4-di-tert-butyl phenyl) pentaerythritol diphosphite (BPE-DP). The ratio of cellulose acetate to polyester is 8:2, 7:3, 6:4, and 5:5. CDA, PBS, and PLLA are common bio-based plastics, and PBAT can also be produced using bio-based monomers. This study leverages the high glass transition temperature (T \(_g\) g ) of CDA to develop CDA/polyester blends with high melt fluidity and good resistance to heat-induced deformation, after addressing the challenges of hot processing without small molecule plasticizers. This material has the potential to be applied in high-heat environments, such as car engine, and can be fully bio-based.