Influence of addition of bulking promoter on AKD-sizing performance

Jin, Hailan; Okayama, Takayuki; Ohtani, Hajime

doi:10.1007/s10086-009-1077-6

Cited by 4 publications

(3 citation statements)

References 5 publications

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“… 11 AKD is one of the most popular internal sizing agents widely used after a decisive change from the acidic to neutral conditions of the papermaking process. 12 , 13 …”

Section: Introductionmentioning

confidence: 99%

“…Hence, internal sizing technology has been well developed since 1807, and various sizing agents have been commercially promoted, such as rosin-based products, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA) emulsions, and so forth. − The AKD molecule has two long alkyl chains and one hetero four-membered ring that can react with hydroxyl groups of cellulose molecules by forming β-keto ester linkages . AKD is one of the most popular internal sizing agents widely used after a decisive change from the acidic to neutral conditions of the papermaking process. , …”

Section: Introductionmentioning

confidence: 99%

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Diatomite Modified with an Alkyl Ketene Dimer for Hydrophobicity of Cellulosic Paper

Fan

et al. 2022

ACS Omega

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Multifunctionalization of papermaking chemicals is one of the main developing strategies. Fillers and internal sizing agents are often mutually restricted in practice. Therefore, it is feasible to prepare a new papermaking chemical by combining the functions of both. A process of diatomite modified with an alkyl ketene dimer (AKD) was developed in this study. The modified diatomite (AD) can concurrently play the role of a mineral filler and sizing agent in the papermaking process. With the equal dosage of AKD, the AD showed better sizing and retention performance than the commercial AKD emulsion in the case of cationic polyacrylamide (CPAM) and the CPAM/bentonite retention system. The sizing mechanism of the AD can be interpreted to be due to numerous hydrophobic sites and the microsurface structure of the paper sheet caused by the AD. Since ketones were not detected in Fourier-transform infrared spectra of the paper sheet filled by the AD, the chemical reaction may not be indispensable for its sizing performance. What is more, an interesting “sticky” hydrophobicity phenomenon was observed when filling with AD. The approach in this study to prepare the “sticky” hydrophobic paper sheet can find its applications in some nontraditional application fields of cellulosic paper.

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“… 11 AKD is one of the most popular internal sizing agents widely used after a decisive change from the acidic to neutral conditions of the papermaking process. 12 , 13 …”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Diatomite Modified with an Alkyl Ketene Dimer for Hydrophobicity of Cellulosic Paper

Fan

et al. 2022

ACS Omega

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show abstract

“…AKD molecule has two long alkyl chains and one hetero four-membered ring that can react with hydroxyl groups of cellulose molecules by forming β-keto ester linkages (Yoshida et al 2012). AKD is one of the most popular internal sizing agents, widely used after a decisive change from the acid to neutral conditions of the papermaking process (Jin et al 2010; Wang et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Diatomite Modified With Alkyl Ketene Dimer For Hydrophobicity of Cellulosic Paper

Fan

et al. 2022

Preprint

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Multi-functionalization of papermaking chemicals is one of its main developing strategies. Fillers and internal sizing agents are often mutually restricted in practice. Therefore, it is feasible to prepare a new papermaking chemical by combining its functions. A process of diatomite modified with Alkyl ketene dimer (AKD) was developed in this study. The modified diatomite (AD) can concurrently play the role of mineral filler and sizing agent in the papermaking process. With the equal dosage of AKD, the AD had better sizing and retention performance than the commercial AKD emulsion in the case of cationic polyacrylamide (CPAM) and the CPAM/ bentonite retention system. The sizing mechanism of the AD can be interpreted as numerous hydrophobic sites and micro-surface structure of the paper sheet caused by the AD. Since the ester linkages were not detected in FT-IR spectra of the paper sheet filled by the AD, the chemical reaction may not be indispensable for its sizing performance. What’s more, an interesting “sticky” hydrophobicity phenomenon was observed when filling with AD. The approach in this study to prepare the “sticky” hydrophobic paper sheet can find its applications in some non-traditional application fields of cellulosic paper.

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Relationship between wettability and sizing degree of paper containing bulking agent

et al. 2010

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Influence of addition of bulking promoter on AKD-sizing performance

Cited by 4 publications

References 5 publications

Diatomite Modified with an Alkyl Ketene Dimer for Hydrophobicity of Cellulosic Paper

Diatomite Modified with an Alkyl Ketene Dimer for Hydrophobicity of Cellulosic Paper

Diatomite Modified With Alkyl Ketene Dimer For Hydrophobicity of Cellulosic Paper

Relationship between wettability and sizing degree of paper containing bulking agent

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