Synthesis and Properties of Semi-Alicyclic Transparent Polyamides

Xu-long Wang; Xue-kuan Ma; Xian-ming Li; Ke-yuan Liu; Jin-jun Yang; Peng-ju Pan; Jun-feng Liu

doi:10.11777/j.issn1000-3304.2026.25319

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Synthesis and Properties of Semi-Alicyclic Transparent Polyamides

更新时间：2026-03-30

- Synthesis and Properties of Semi-Alicyclic Transparent Polyamides
- Acta Polymerica Sinica Pages: 1-9(2026)
- 作者机构：
  
  1.天津理工大学环境科学与安全工程学院天津 300384
  2.浙江大学化学工程与生物工程学院化学工程与低碳技术全国重点实验室杭州 310058
  3.浙江大学衢州研究院衢州 324000
  4.浙江清和新材料科技有限公司台州 317300
- 作者简介：
  
  Jin-jun Yang, E-mail: tjyjj_2014@tjut.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2026.25319
  CLC：
- CSTR：32057.14.GFZXB.2026.7573
- Received：25 December 2025，
  
  Accepted：09 March 2026，
  
  Online First：30 March 2026，
- 稿件说明：
移动端阅览
王旭龙, 马学宽, 李显明, 刘可远, 杨进军, 潘鹏举, 刘君峰. 半脂环族透明聚酰胺的合成及性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.25319.

Wang, X. L.; Ma, X. K.; Li, X. M.; Liu, K. Y.; Yang, J. J.; Pan, P. J.; Liu, J. F. Synthesis and properties of semi-alicyclic transparent polyamides. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.25319.
王旭龙, 马学宽, 李显明, 刘可远, 杨进军, 潘鹏举, 刘君峰. 半脂环族透明聚酰胺的合成及性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.25319. DOI： CSTR： 32057.14.GFZXB.2026.7573.

Wang, X. L.; Ma, X. K.; Li, X. M.; Liu, K. Y.; Yang, J. J.; Pan, P. J.; Liu, J. F. Synthesis and properties of semi-alicyclic transparent polyamides. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.25319. DOI： CSTR： 32057.14.GFZXB.2026.7573.

摘要

采用低温溶液-高温熔融缩聚法，以4

4′-二氨基二环己基甲烷(PACM)和3

3′-二甲基-4

4-二氨基二环己基甲烷(MACM)等脂环族二胺与不同链长脂肪族二酸为单体，通过“一锅法”制备了透明聚酰胺. 核磁氢谱及傅里叶变换红外光谱确认聚酰胺的成功合成，差示扫描量热法只能得到玻璃化转变温度(

)而无熔融温度(

)，X射线衍射分析显示所有样品均为无定形结构. 研究表明，材料透光率均高于90%，且兼具良好力学性能. 随二酸碳链增长，分子链柔性增加与酰胺键密度下降导致

降低，MACM基聚酰胺因甲基位阻效应较PACM基聚酰胺呈现更高

. 此外，材料平衡吸水率随碳链增长显著下降，有利于提升制品尺寸稳定性. 本研究为开发高透明、低吸湿聚酰胺材料提供了理论依据，适用于光学仪器等精密部件领域.

Abstract

This study employed a low-temperature solution and high-temperature melt polycondensation method to prepare transparent polyamides

via

a one-pot process

using alic

yclic diamines such as 4

4′-diaminodicyclohexylmethane (PACM) and 3

3′-dimethyl-4

4′-diaminodicyclohexylmethane (MACM)

along with aliphatic dicarboxylic acids of varying chain lengths as monomers. The successful synthesis of the polyamides was confirmed by

H nuclear magnetic resonance (

H-NMR) and Fourier transform infrared (FTIR) spectroscopy. Differential scanning calorimetry (DSC) analysis revealed only glass transition temperatures (

) without detectable melting temperatures (

)

and X-ray diffraction (XRD) patterns indicated that all samples possessed an amorphous structure. The research demonstrated that the material has a light transmittance above 90%

coupled with good mechanical properties. As the carbon chain length of the diacids increased

the enhanced flexibility of the molecular chains and the reduced density of amide linkages led to a decrease in the glass transition temperature. MACM-based polyamides showed higher

compared to PACM-based ones due to the steric hindrance effect of the methyl groups. Furthermore

the equilibrium water absorption of the materials decreased significantly with increasing carbon chain length

which is beneficial for improving the dimensional stability of the products. This study provides a theoretical foundation for developing polyamide materials with high transparency and low moisture absorption

suitable for applications in optical instruments and other precision components.

关键词

Keywords

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