CN114481681B - 一种纤维素/聚乳酸纤维复合纸及其制备方法 - Google Patents
一种纤维素/聚乳酸纤维复合纸及其制备方法 Download PDFInfo
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Abstract
本发明提供一种纤维素/聚乳酸纤维复合纸及其制备方法,包括:(1)将聚乳酸纤维剪切成短纤维,清洗、烘干后得到聚乳酸短纤维;(2)将聚乳酸短纤维用无水乙醇浸泡、清洗后,用0.5%~3.0%的强碱溶液进行碱刻蚀处理,碱刻蚀处理完成后洗涤直至洗液呈现中性,干燥后得到改性聚乳酸短纤维;(3)将天然植物纤维浆板用水浸泡疏解,然后打浆,得到植物纤维浆料;(4)将助剂配制成助剂溶液;(5)将改性聚乳酸短纤维、植物纤维浆料和助剂溶液混合疏解分散后,制得混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到纤维素/聚乳酸纤维复合纸。提高了复合纸的抗张指数和撕裂指数,且降低了聚乳酸纤维的处理成本和加工时间。
Description
技术领域
本发明涉及特种纸的制备领域,特别涉及一种纤维素/聚乳酸纤维复合纸及其制备方法。
背景技术
聚乳酸(PLA)是一种聚酯类聚合物,具有优异的可生物降解性。能通过乳酸缩聚或丙交酯开环聚合形成,因此也称为聚丙交酯。聚乳酸可以由玉米、小麦、木薯、甜菜等作物和有机废弃物发酵成乳酸,再经乳酸聚合而成。聚乳酸纺丝后成型可制成聚乳酸纤维,因多以玉米为原料,故又称“玉米纤维”。聚乳酸纤维的原料来源于自然界,由于其产品在自然界中可以完全降解为H2O和CO2,不产生其他废料,从而实现了完整的自然循环,成为21世纪极具发展前景的纤维材料。
申请号为201210428363.6的专利文献公开一种聚乳酸纤维成纸及制备方法,其通过对聚乳酸纤维进行游离打浆,然后与阔叶木浆纤维和聚酯纤维配抄成纸。其缺点是:聚乳酸纤维表面光滑且具有较好的疏水性能,用游离打浆法处理聚乳酸纤维效果差、耗能高、时间长、成本高,所得复合纸抗张指数和撕裂指数都有待提升。
发明内容
为了克服上述现有技术存在的缺陷,本发明的目的是在于提供一种纤维素/聚乳酸纤维复合纸及其制备方法,提高了复合纸的抗张指数和撕裂指数,且降低了聚乳酸纤维的处理成本和加工时间。
本发明通过以下技术方案实现:
一种纤维素/聚乳酸纤维复合纸的制备方法,包括:
(1)将聚乳酸纤维剪切成短纤维,清洗、烘干后得到聚乳酸短纤维;
(2)将聚乳酸短纤维用无水乙醇浸泡、清洗后,用0.5%~3.0%的强碱溶液进行碱刻蚀处理,碱刻蚀处理完成后洗涤直至洗液呈现中性,干燥后得到改性聚乳酸短纤维;
(3)将天然植物纤维浆板用水浸泡疏解,然后打浆,得到植物纤维浆料;
(4)将助剂配制成助剂溶液;
(5)将改性聚乳酸短纤维、植物纤维浆料和助剂溶液混合疏解分散后,制得混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到纤维素/聚乳酸纤维复合纸。
优选的,步骤(1)中,聚乳酸短纤维的长度为0.5~2.0mm。
优选的,步骤(2)中,强碱溶液为氢氧化钠溶液。
优选的,步骤(3)中,天然植物纤维浆板是商品天然植物纤维浆板和废纸天然植物纤维浆板中的一种或两种。
优选的,步骤(3)中,打浆度为35~60°SR。
优选的,步骤(4)中,助剂是瓜尔胶、壳聚糖和羧甲基纤维素钠中一种或几种的混合物。
优选的,以聚乳酸纤维、天然植物纤维浆板和助剂的总质量计,聚乳酸纤维质量占20%~80%,天然植物纤维浆板质量占19%~79%,助剂质量占1%。
采用所述的制备方法得到的纤维素/聚乳酸纤维复合纸。
优选的,纤维素/聚乳酸纤维复合纸的水接触角为20°~120°。
与现有技术相比,本发明具有如下的有益效果:
本发明通过对聚乳酸纤维进行机械剪短,降低了聚乳酸纤维处理成本和加工时间,通过碱刻蚀法处理,提高了复合纸的抗张指数和撕裂指数。本发明在保证纤维素/聚乳酸纤维复合纸一定的抗张强度条件下,降低了复合纸的制备成本,改善了成纸的机械强度,克服现有技术制造的纤维素/聚乳酸纤维复合纸成本高的缺陷。且通过此方法制备的纤维素/聚乳酸纤维复合纸还具有一定的疏水性,拓宽了聚乳酸纤维复合纸的应用领域。本发明成果还可用于一次性医学检测纸质器件(POCT),扩大一次性医学检测器件的原材料来源,加快体外诊断检测技术的发展。
本发明充分利用了聚乳酸纤维生物相容性好、安全无毒的特性、纤维强度高、可生物降解的特点,用其和植物纤维配抄成纸,替换现有包装行业的塑料制品,可减少对不可再生石油资源的消耗,同时由于其具有生物降解性,废弃物不会对环境造成污染。
具体实施方式
为了进一步理解本发明,下面结合实施例对本发明进行描述,这些描述只是进一步解释本发明的特征和优点,并非用于限制本发明的权利要求。
本发明通过改变碱处理浓度和复合纸中聚乳酸纤维的含量,来提高湿法成型复合纸的疏水性和机械强度。将经过机械剪短和碱液浸泡处理后的聚乳酸纤维与外加植物纤维和羧甲基纤维素钠助剂进行配浆,最后抄造成基片。
本发明所述的纤维素/聚乳酸纤维复合纸的基质材料按总质量的百分比计:聚乳酸纤维占20%~80%,天然植物纤维占19%~79%,助剂1%。纤维素/聚乳酸纤维复合纸的厚度为0.1~0.5mm,纸张的水接触角为20°~120°。
所述的天然植物纤维是商品天然植物纤维浆板或废纸天然植物纤维浆板中的一种或两种;所述的商品天然植物纤维浆板为漂白阔叶木浆板、漂白针叶木浆、漂白竹浆板和棉浆浆板中一种或几种混合物;所述的阔叶木浆板是杨木浆板、桉木浆板、桦木浆板中的一种或几种的混合物;所述的针叶木浆板是红木浆板、马尾松浆板、落叶松浆板中的一种或几种的混合物;所述的废纸天然植物纤维浆板是办公废纸商品浆板。
所述的聚乳酸纤维是商品聚乳酸纤维。
所述的助剂是瓜尔胶、壳聚糖、羧甲基纤维素钠中一种或几种的混合物。所述的羧甲基纤维素钠聚合度为200~1000,特别优选是300~600,更优选400。
所述的纤维素/聚乳酸纤维复合纸制备方法具体包括以下步骤:
(1)将聚乳酸纤维通过机械剪切,把聚乳酸纤维处理为长度0.5~2.0mm的短纤维,用去离子水清洗、烘干后得到聚乳酸短纤维;
(2)将聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用0.5%~3.0%(w%)的NaOH溶液处理1 h,再用去离子水反复洗涤聚乳酸短纤维,直至洗液呈现中性,干燥后得到改性聚乳酸短纤维;
(3)将天然植物纤维浆板用去离子水浸泡24h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为35~60°SR,得到植物纤维浆料;
(4)将助剂配制成浓度为0.1%的助剂溶液;
(5)将步骤(1)~(4)得到的改性聚乳酸短纤维、植物纤维浆料和助剂溶液混合疏解分散后,制得混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到纤维素/聚乳酸纤维复合纸成品。
所选制备方法为湿法成形技术,即以水为分散介质,将造纸原料(含聚乳酸纤维)均匀分散后经脱水成形、干燥等工艺制备纸张的技术。
实施例1
(1)将聚乳酸纤维在低速分散机上剪切,把聚乳酸纤维处理为长度0.5-2.0mm的短纤维,用去离子水清洗后、烘干后得到聚乳酸短纤维;
(2)将经过剪短处理后的聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用0.5%(w%)的NaOH溶液处理1 h,得到改性聚乳酸短纤维;
(3)将漂白阔叶木浆板用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为35 °SR,得到纤维素纸浆;
(4)将助剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(5)按照改性聚乳酸短纤维、纤维素纸浆和助剂以质量比40:59:1,将改性聚乳酸短纤维、纤维素纸浆和助剂溶液混合疏解分散后,制得混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到纤维素/聚乳酸纤维复合纸成品。
实施例2
(1)将聚乳酸纤维在低速分散机上剪切,把聚乳酸纤维处理为长度0.5-2.0mm的短纤维,用去离子水清洗后、烘干后得到聚乳酸短纤维;
(2)将经过剪短处理后的聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用1.0%(w%)的NaOH溶液处理1 h,得到改性聚乳酸短纤维;
(3)将漂白阔叶木浆板和漂白针叶木浆板分别用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为40 °SR,然后将漂白阔叶木浆和漂白针叶木浆按质量比7:3混合,得到纤维素纸浆;
(4)将助剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(5)按照改性聚乳酸短纤维、纤维素纸浆和助剂以质量比50:49:1,将改性聚乳酸短纤维、纤维素纸浆和助剂溶液混合疏解分散后,制得混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到纤维素/聚乳酸纤维复合纸成品。
实施例3
(1)将聚乳酸纤维在低速分散机上剪切,把聚乳酸纤维处理为长度0.5~2.0mm的短纤维,用去离子水清洗后、烘干后得到聚乳酸短纤维;
(2)将经过剪短处理后的聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用1.5%(w%)的NaOH溶液处理1 h,得到改性聚乳酸短纤维;
(3)将漂白针叶木浆板用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为45 °SR,得到纤维素纸浆;
(4)将助留助滤剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(5)按照改性聚乳酸短纤维、纤维素纸浆和助剂以质量比60:39:1,将改性聚乳酸短纤维、纤维素纸浆和助剂溶液混合疏解分散后,制得混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到纤维素/聚乳酸纤维复合纸成品。
实施例4
(1)将聚乳酸纤维在低速分散机上剪切,把聚乳酸纤维处理为长度0.5~2.0mm的短纤维,用去离子水清洗后、烘干后得到聚乳酸短纤维;
(2)将经过剪短处理后的聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用2.0%(w%)的NaOH溶液处理1 h,得到改性聚乳酸短纤维;
(3)将办公废纸商品浆板用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为50 °SR,得到纤维素纸浆;
(4)将助剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(5)按照改性聚乳酸短纤维、纤维素纸浆和助剂以质量比40:59:1,将改性聚乳酸短纤维、纤维素纸浆和助剂溶液混合疏解分散后,制得混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到纤维素/聚乳酸纤维复合纸成品。
实施例5
(1)将聚乳酸纤维在低速分散机上剪切,把聚乳酸纤维处理为长度0.5~2.0mm的短纤维,用去离子水清洗后、烘干后得到聚乳酸短纤维;
(2)将经过剪短处理后的聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用2.5%(w%)的NaOH溶液处理1 h,得到改性聚乳酸短纤维;
(3)将漂白阔叶木浆板用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为55 °SR,得到纤维素纸浆;
(4)将助剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(5)按照改性聚乳酸短纤维、纤维素纸浆和助剂以质量比50:49:1,将改性聚乳酸短纤维、纤维素纸浆和助剂溶液混合疏解分散后,制得混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到纤维素/聚乳酸纤维复合纸成品。
实施例6
(1)将聚乳酸纤维在低速分散机上剪切,把聚乳酸纤维处理为长度0.5~2.0mm的短纤维,用去离子水清洗后、烘干后得到聚乳酸短纤维;
(2)将经过剪短处理后的聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用3.0%(w%)的NaOH溶液处理1 h,得到改性聚乳酸短纤维;
(3)将漂白阔叶木浆板用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为60 °SR,得到纤维素纸浆;
(4)将助剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(5)按照改性聚乳酸短纤维、纤维素纸浆和助剂以质量比60:39:1,将改性聚乳酸短纤维、纤维素纸浆和助剂溶液混合疏解分散后,制得混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到纤维素/聚乳酸纤维复合纸成品。
对比例1
以未经碱处理的聚乳酸纤维复合纸作为空白样,其实施方式为:
(1)将聚乳酸纤维在低速分散机上剪切,把聚乳酸纤维处理为长度0.5-2.0mm的短纤维,用去离子水清洗后、烘干后得到聚乳酸短纤维;
(2)将经过剪短处理后的聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用去离子水浸泡处理1 h;
(3)将漂白阔叶木浆板用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为45 °SR,得到纤维素纸浆;
(4)将助剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(5)按照聚乳酸短纤维、纤维素纸浆和助剂以质量比40:59:1,将聚乳酸短纤维、纤维素纸浆和助剂溶液混合疏解分散后,制得混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到聚乳酸纤维复合纸成品。
以未碱处理的纤维素/聚乳酸纤维复合纸作为空白样,与碱处理纤维素/聚乳酸纤维复合纸进行对比检测,结果见表1。
表1 实施例1~6及对比例制备的复合纸的性能对比
由表1可知,经过碱处理后纤维素/聚乳酸纤维复合纸的抗张指数和撕裂指数都有较大提升,其中纸张抗张指数提升5.63%~38.96%,撕裂指数提升5.67%~40.08%。同时,碱处理对复合纸的松厚度、白度和接触角的影响不大。
实施例7
(1)将聚乳酸纤维在低速分散机上剪切,把聚乳酸纤维处理为长度0.5~2.0mm的短纤维,用去离子水清洗后、烘干后得到聚乳酸短纤维;
(2)将经过剪短处理后的聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用2.0%(w%)的NaOH溶液处理1 h,得到改性聚乳酸短纤维;
(3)将漂白阔叶木浆板用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为35 °SR,得到纤维素纸浆;
(4)将助剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(5)按照聚乳酸短纤维、纤维素纸浆和助剂以质量比20:79:1,将改性聚乳酸短纤维、纤维素纸浆和助剂溶液混合疏解分散后,制的混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到聚乳酸纤维复合纸成品。
实施例8
(1)将聚乳酸纤维在低速分散机上剪切,把聚乳酸纤维处理为长度0.5~2.0mm的短纤维,用去离子水清洗后、烘干后得到聚乳酸短纤维;
(2)将经过剪短处理后的聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用2.0%(w%)的NaOH溶液处理1 h,得到改性聚乳酸短纤维;
(3)将办公废纸商品浆板用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为45 °SR,得到纤维素纸浆;
(4)将助剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(5)按照聚乳酸短纤维、纤维素纸浆和助剂以质量比40:59:1,将改性聚乳酸短纤维、纤维素纸浆和助剂溶液混合疏解分散后,制的混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到聚乳酸纤维复合纸成品。
实施例9
(1)将聚乳酸纤维在低速分散机上剪切,把聚乳酸纤维处理为长度0.5~2.0mm的短纤维,用去离子水清洗后、烘干后得到聚乳酸短纤维;
(2)将经过剪短处理后的聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用3.0%(w%)的NaOH溶液处理1 h,得到改性聚乳酸短纤维;
(3)将漂白阔叶木浆板用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为50 °SR,得到纤维素纸浆;
(4)将助剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(5)按照聚乳酸短纤维、纤维素纸浆和助剂以质量比60:39:1,将改性聚乳酸短纤维、纤维素纸浆和助剂溶液混合疏解分散后,制的混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到聚乳酸纤维复合纸成品。
实施例10
(1)将聚乳酸纤维在低速分散机上剪切,把聚乳酸纤维处理为长度0.5~2.0mm的短纤维,用去离子水清洗后、烘干后得到聚乳酸短纤维;
(2)将经过剪短处理后的聚乳酸短纤维室温下在无水乙醇中浸泡3小时,随后用水和无水乙醇清洗以除去杂质和污染物。随后将其用3.0%(w%)的NaOH溶液处理1 h,得到改性聚乳酸短纤维;
(3)将办公废纸商品浆板用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为60 °SR,得到纤维素纸浆;
(4)将助剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(5)按照聚乳酸短纤维、纤维素纸浆和助剂以质量比80:19:1,将改性聚乳酸短纤维、纤维素纸浆和助剂溶液混合疏解分散后,制的混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到纤维素/聚乳酸纤维复合纸成品。
对比例2
以不添加聚乳酸纤维的纯纤维素纸作为空白样,其实施方式为:
(1)将漂白阔叶木浆板用去离子水浸泡24 h,后用纤维疏解机充分疏解(运行15000转),然后天然植物纤维浆板以2%的打浆浓度在槽式打浆机中加压(挂1 kg重砣)打浆,打浆度为50 °SR,得到纤维素纸浆;
(2)将助剂羧甲基纤维素钠配制成浓度为0.1%的助剂溶液;
(3)按照纤维素纸浆和助剂以质量比99:1,将纤维素纸浆和助剂溶液混合疏解分散后,制的混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到聚乳酸纤维复合纸成品。
以未添加聚乳酸纤维的纯纤维素纸作为空白样,与纤维素/聚乳酸纤维复合纸进行对比检测结果见表2。
表2 实施例7~10及对比例2制备复合纸的性能对比
由表2可知,聚乳酸纤维的加入可以有效的提升纸张的抗张指数和撕裂指数,并赋予纸张疏水性。其中与纯纤维素纸相比,纤维素/聚乳酸纤维复合纸的抗张指数提升16.08%,撕裂指数提升136.31%。同时纸张的接触角由32.1°提升至123.5°。
Claims (6)
1.一种纤维素/聚乳酸纤维复合纸的制备方法,其特征在于,包括:
(1)将聚乳酸纤维剪切成短纤维,清洗、烘干后得到聚乳酸短纤维;
(2)将聚乳酸短纤维用无水乙醇浸泡、清洗后,用0.5%~3.0%的强碱溶液进行碱刻蚀处理,碱刻蚀处理完成后洗涤直至洗液呈现中性,干燥后得到改性聚乳酸短纤维;
(3)将天然植物纤维浆板用水浸泡疏解,然后打浆,得到植物纤维浆料;
(4)将助剂配制成助剂溶液;
(5)将改性聚乳酸短纤维、植物纤维浆料和助剂溶液混合疏解分散后,制得混合浆料,采用湿法成型技术抄造,经压榨、烘干后得到纤维素/聚乳酸纤维复合纸;
步骤(1)中,聚乳酸短纤维的长度为0.5~2.0mm;
步骤(3)中,打浆度为35~60°SR ;
以聚乳酸纤维、天然植物纤维浆板和助剂的总质量计,聚乳酸纤维质量占20%~80%,天然植物纤维浆板质量占19%~79%,助剂质量占1%。
2.根据权利要求1所述的纤维素/聚乳酸纤维复合纸的制备方法,其特征在于,步骤(2)中,强碱溶液为氢氧化钠溶液。
3.根据权利要求1所述的纤维素/聚乳酸纤维复合纸的制备方法,其特征在于,步骤(3)中,天然植物纤维浆板是商品天然植物纤维浆板和废纸天然植物纤维浆板中的一种或两种。
4.根据权利要求1所述的纤维素/聚乳酸纤维复合纸的制备方法,其特征在于,步骤(4)中,助剂是瓜尔胶、壳聚糖和羧甲基纤维素钠中一种或几种的混合物。
5.采用权利要求1~4任一项所述的制备方法得到的纤维素/聚乳酸纤维复合纸。
6.根据权利要求5所述的纤维素/聚乳酸纤维复合纸,其特征在于,纤维素/聚乳酸纤维复合纸的水接触角为20°~120°。
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