Tissue products incorporating nanoporous cellulose fiber

A fibrous cellulosic product comprising conventional cellulosic fibers and laterally expanded cellulose fibers, said fibers accepting a blue stain when treated with Graff C-stain, said stain exhibiting less red than the stains exhibited with bleached hardwood kraft fibers and bleached softwood kraft fibers.

A fibrous cellulosic product, comprising conventional cellulosic fibers and laterally expanded cellulose fibers, said fibers exhibiting an X-Ray diffraction peak at 2θ=20.6° for the most prominent reflection and exhibiting at least two broad overlapping maxima in their Raman spectrum between 285 and 500 cm−1, the height of the two tallest of said maxima in said spectrum between 285 and 500 cm−1 being between 35 and 50% of the height of a peak near 1098 cm−1, said at least two maxima between 285 and 500 cm−1 being at least 10% broader at half height than the corresponding maxima in the pulp from which said laterally expanded cellulose fibers were prepared.

A fibrous cellulosic product, comprising conventional cellulosic fibers and laterally expanded cellulose fibers, the Raman Spectrum of said laterally expanded cellulose fibers exhibiting two broad peaks, one centered near 367 cm−1 and another lower peak centered near 441 cm−1, along with a peak near 897 cm−1 which relative to the tallest peak in the spectrum is shorter than the corresponding peak in Cellulose II but taller than the corresponding peak in Cellulose I as delineated in FIG. 2 hereof, said peak centered near 367 cm−1 as well as said peak centered near 441 cm−1 being at least 10% broader at half height than the corresponding peak in the pulp from which said laterally expanded cellulose fibers were prepared.

A fibrous cellulosic product, comprising conventional cellulosic fibers and laterally expanded cellulose fibers, said laterally expanded cellulose fibers exhibiting peaks in their Raman spectrum near:

• 489 cm−1 and 578 cm−1 as well as overlapping peaks centered near 367 cm−1 and 441 cm−1, the overlapping peaks near 367 cm−1 extending from 355 cm−1 to 380 cm−1 and comprising two overlapping smaller peaks, one at 355 cm−1 and the other at 380 cm−1;
• and the overlapping peaks near 441 cm−1 extending from 424 cm−1 to 457 cm−1 and comprising two overlapping smaller peaks, one at 424 cm−1 and the other at 457 cm−1.

A fibrous cellulosic product, comprising conventional cellulosic fibers and laterally expanded cellulose fibers, said laterally expanded cellulose fibers exhibiting apiculi in their Raman spectrum near:

• 489 cm−1 and 578 cm−1 as well as doublets centered near 367 cm−1 and 441 cm−1, the doublet near 367 cm−1 extending from 355 cm−1 to 380 cm−1 and comprising two overlapping smaller peaks, one at 355 cm−1 and the other at 380 cm−1 and exceeding the spectrum near 441 cm−1 by at least 15% in intensity;
• and the doublet near 441 cm−1 extending from 424 cm−1 to 457 cm−1 and comprising two overlapping smaller peaks.

A fibrous cellulosic product, comprising conventional cellulosic fibers and laterally expanded cellulose fibers, said laterally expanded cellulose fibers exhibiting doublets centered near 367 cm−1 and 441 cm−1 in their Raman spectrum, the maximum of said doublets in said region being less than 50% of the maximum near 1098 cm−1.

A fibrous cellulosic product, comprising conventional cellulosic fibers and laterally expanded cellulose fibers, said laterally expanded cellulose fibers exhibiting at least two broad overlapping maxima in their Raman spectrum between 285 and 500 cm−1, the height of the two tallest of said maxima in said spectrum between 285 and 500 cm−1 being between 35 and 50% of the height of a peak near 1098 cm−1, said at least two maxima between 285 and 500 cm−1 being at least 10% broader at half height than the corresponding maxima in the pulp from which said laterally expanded cellulose fibers were prepared.