Studies on microcapsules View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1977-04

AUTHORS

K. Takahashi, T. Kondo

ABSTRACT

Potentiometric titrations of several poly (phthaloyl amino acid) microcapsules were performed using KOH, NaOH, and LiOH as titrants. The effects of amino acid residues, counterion species, and counterions concentration on the titration behavior of the microcapsules were examined by using a theoretical potentiometric equation which allows to calculate the intrinsic dissociation constants for the carboxyl groups and surface potentials of the microcapsules from titration data. The values ofpK0 and ψ0 were found to be appreciably affected by amino acid residues in the polymers constituting the microcapsules. Lower pKo (higher acidity) and less negative surface potential (stronger counterion binding) were obtained in the titration with LiOH than in those with KOH and NaOH. As the counterion concentration in the medium increased, the dissociation of the carboxyl groups was promoted due to the decreased electrical work necessary to remove protons. More... »

PAGES

357-361

References to SciGraph publications

  • 1973-04. Studies on microcapsules in COLLOID AND POLYMER SCIENCE
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf01773532

    DOI

    http://dx.doi.org/10.1007/bf01773532

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1016114022


    Indexing Status Check whether this publication has been indexed by Scopus and Web Of Science using the SN Indexing Status Tool
    Incoming Citations Browse incoming citations for this publication using opencitations.net

    JSON-LD is the canonical representation for SciGraph data.

    TIP: You can open this SciGraph record using an external JSON-LD service: JSON-LD Playground Google SDTT

    [
      {
        "@context": "https://springernature.github.io/scigraph/jsonld/sgcontext.json", 
        "about": [
          {
            "id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/09", 
            "inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/", 
            "name": "Engineering", 
            "type": "DefinedTerm"
          }, 
          {
            "id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/0907", 
            "inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/", 
            "name": "Environmental Engineering", 
            "type": "DefinedTerm"
          }
        ], 
        "author": [
          {
            "affiliation": {
              "alternateName": "Faculty of Pharmaceutical Sciences, Science University of Tokyo, Shinjuku, 162, Tokyo, Japan", 
              "id": "http://www.grid.ac/institutes/grid.143643.7", 
              "name": [
                "Faculty of Pharmaceutical Sciences, Science University of Tokyo, Shinjuku, 162, Tokyo, Japan"
              ], 
              "type": "Organization"
            }, 
            "familyName": "Takahashi", 
            "givenName": "K.", 
            "type": "Person"
          }, 
          {
            "affiliation": {
              "alternateName": "Faculty of Pharmaceutical Sciences, Science University of Tokyo, Shinjuku, 162, Tokyo, Japan", 
              "id": "http://www.grid.ac/institutes/grid.143643.7", 
              "name": [
                "Faculty of Pharmaceutical Sciences, Science University of Tokyo, Shinjuku, 162, Tokyo, Japan"
              ], 
              "type": "Organization"
            }, 
            "familyName": "Kondo", 
            "givenName": "T.", 
            "id": "sg:person.01320305023.75", 
            "sameAs": [
              "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01320305023.75"
            ], 
            "type": "Person"
          }
        ], 
        "citation": [
          {
            "id": "sg:pub.10.1007/bf01498645", 
            "sameAs": [
              "https://app.dimensions.ai/details/publication/pub.1007822756", 
              "https://doi.org/10.1007/bf01498645"
            ], 
            "type": "CreativeWork"
          }
        ], 
        "datePublished": "1977-04", 
        "datePublishedReg": "1977-04-01", 
        "description": "Potentiometric titrations of several poly (phthaloyl amino acid) microcapsules were performed using KOH, NaOH, and LiOH as titrants. The effects of amino acid residues, counterion species, and counterions concentration on the titration behavior of the microcapsules were examined by using a theoretical potentiometric equation which allows to calculate the intrinsic dissociation constants for the carboxyl groups and surface potentials of the microcapsules from titration data. The values ofpK0 and \u03c80 were found to be appreciably affected by amino acid residues in the polymers constituting the microcapsules. Lower pKo (higher acidity) and less negative surface potential (stronger counterion binding) were obtained in the titration with LiOH than in those with KOH and NaOH. As the counterion concentration in the medium increased, the dissociation of the carboxyl groups was promoted due to the decreased electrical work necessary to remove protons.", 
        "genre": "article", 
        "id": "sg:pub.10.1007/bf01773532", 
        "inLanguage": "en", 
        "isAccessibleForFree": false, 
        "isPartOf": [
          {
            "id": "sg:journal.1083512", 
            "issn": [
              "0303-402X", 
              "1435-1536"
            ], 
            "name": "Colloid and Polymer Science", 
            "publisher": "Springer Nature", 
            "type": "Periodical"
          }, 
          {
            "issueNumber": "4", 
            "type": "PublicationIssue"
          }, 
          {
            "type": "PublicationVolume", 
            "volumeNumber": "255"
          }
        ], 
        "keywords": [
          "group", 
          "amino acid residues", 
          "acid residues", 
          "concentration", 
          "titration", 
          "effect", 
          "dissociation constants", 
          "potential", 
          "data", 
          "study", 
          "microcapsules", 
          "residues", 
          "species", 
          "behavior", 
          "carboxyl groups", 
          "PKO", 
          "medium", 
          "dissociation", 
          "electrical work", 
          "NaOH", 
          "surface potential", 
          "negative surface potential", 
          "work", 
          "potentiometric titration", 
          "poly (urea-formaldehyde) microcapsules", 
          "KOH", 
          "titrant", 
          "counterion species", 
          "counterion concentration", 
          "titration behavior", 
          "equations", 
          "intrinsic dissociation constants", 
          "constants", 
          "titration data", 
          "polymers", 
          "protons", 
          "LiOH", 
          "theoretical potentiometric equation", 
          "potentiometric equation", 
          "values ofpK0", 
          "ofpK0", 
          "\u03c80", 
          "Lower pKo", 
          "decreased electrical work"
        ], 
        "name": "Studies on microcapsules", 
        "pagination": "357-361", 
        "productId": [
          {
            "name": "dimensions_id", 
            "type": "PropertyValue", 
            "value": [
              "pub.1016114022"
            ]
          }, 
          {
            "name": "doi", 
            "type": "PropertyValue", 
            "value": [
              "10.1007/bf01773532"
            ]
          }
        ], 
        "sameAs": [
          "https://doi.org/10.1007/bf01773532", 
          "https://app.dimensions.ai/details/publication/pub.1016114022"
        ], 
        "sdDataset": "articles", 
        "sdDatePublished": "2021-12-01T19:02", 
        "sdLicense": "https://scigraph.springernature.com/explorer/license/", 
        "sdPublisher": {
          "name": "Springer Nature - SN SciGraph project", 
          "type": "Organization"
        }, 
        "sdSource": "s3://com-springernature-scigraph/baseset/20211201/entities/gbq_results/article/article_129.jsonl", 
        "type": "ScholarlyArticle", 
        "url": "https://doi.org/10.1007/bf01773532"
      }
    ]
     

    Download the RDF metadata as:  json-ld nt turtle xml License info

    HOW TO GET THIS DATA PROGRAMMATICALLY:

    JSON-LD is a popular format for linked data which is fully compatible with JSON.

    curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1007/bf01773532'

    N-Triples is a line-based linked data format ideal for batch operations.

    curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1007/bf01773532'

    Turtle is a human-readable linked data format.

    curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/pub.10.1007/bf01773532'

    RDF/XML is a standard XML format for linked data.

    curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1007/bf01773532'


     

    This table displays all metadata directly associated to this object as RDF triples.

    112 TRIPLES      22 PREDICATES      71 URIs      62 LITERALS      6 BLANK NODES

    Subject Predicate Object
    1 sg:pub.10.1007/bf01773532 schema:about anzsrc-for:09
    2 anzsrc-for:0907
    3 schema:author N59a6dfa7b2b748e398a3544616f93ab8
    4 schema:citation sg:pub.10.1007/bf01498645
    5 schema:datePublished 1977-04
    6 schema:datePublishedReg 1977-04-01
    7 schema:description Potentiometric titrations of several poly (phthaloyl amino acid) microcapsules were performed using KOH, NaOH, and LiOH as titrants. The effects of amino acid residues, counterion species, and counterions concentration on the titration behavior of the microcapsules were examined by using a theoretical potentiometric equation which allows to calculate the intrinsic dissociation constants for the carboxyl groups and surface potentials of the microcapsules from titration data. The values ofpK0 and ψ0 were found to be appreciably affected by amino acid residues in the polymers constituting the microcapsules. Lower pKo (higher acidity) and less negative surface potential (stronger counterion binding) were obtained in the titration with LiOH than in those with KOH and NaOH. As the counterion concentration in the medium increased, the dissociation of the carboxyl groups was promoted due to the decreased electrical work necessary to remove protons.
    8 schema:genre article
    9 schema:inLanguage en
    10 schema:isAccessibleForFree false
    11 schema:isPartOf N2363903fd27f4243a1da7719837b000f
    12 N585e7cbf13514e188cb2bf03131c1d8a
    13 sg:journal.1083512
    14 schema:keywords KOH
    15 LiOH
    16 Lower pKo
    17 NaOH
    18 PKO
    19 acid residues
    20 amino acid residues
    21 behavior
    22 carboxyl groups
    23 concentration
    24 constants
    25 counterion concentration
    26 counterion species
    27 data
    28 decreased electrical work
    29 dissociation
    30 dissociation constants
    31 effect
    32 electrical work
    33 equations
    34 group
    35 intrinsic dissociation constants
    36 medium
    37 microcapsules
    38 negative surface potential
    39 ofpK0
    40 poly (urea-formaldehyde) microcapsules
    41 polymers
    42 potential
    43 potentiometric equation
    44 potentiometric titration
    45 protons
    46 residues
    47 species
    48 study
    49 surface potential
    50 theoretical potentiometric equation
    51 titrant
    52 titration
    53 titration behavior
    54 titration data
    55 values ofpK0
    56 work
    57 ψ0
    58 schema:name Studies on microcapsules
    59 schema:pagination 357-361
    60 schema:productId Na669de3147994506a6420789e7e0c921
    61 Nbd8507e22bcd43b8893920d406fb1e70
    62 schema:sameAs https://app.dimensions.ai/details/publication/pub.1016114022
    63 https://doi.org/10.1007/bf01773532
    64 schema:sdDatePublished 2021-12-01T19:02
    65 schema:sdLicense https://scigraph.springernature.com/explorer/license/
    66 schema:sdPublisher N6c3a9bb2e69e4b4ebec38b5365250caa
    67 schema:url https://doi.org/10.1007/bf01773532
    68 sgo:license sg:explorer/license/
    69 sgo:sdDataset articles
    70 rdf:type schema:ScholarlyArticle
    71 N16152a328128466bba181c7829afa697 rdf:first sg:person.01320305023.75
    72 rdf:rest rdf:nil
    73 N2363903fd27f4243a1da7719837b000f schema:issueNumber 4
    74 rdf:type schema:PublicationIssue
    75 N4b3ad6f1a0fb4c939f7f1b8bd8612134 schema:affiliation grid-institutes:grid.143643.7
    76 schema:familyName Takahashi
    77 schema:givenName K.
    78 rdf:type schema:Person
    79 N585e7cbf13514e188cb2bf03131c1d8a schema:volumeNumber 255
    80 rdf:type schema:PublicationVolume
    81 N59a6dfa7b2b748e398a3544616f93ab8 rdf:first N4b3ad6f1a0fb4c939f7f1b8bd8612134
    82 rdf:rest N16152a328128466bba181c7829afa697
    83 N6c3a9bb2e69e4b4ebec38b5365250caa schema:name Springer Nature - SN SciGraph project
    84 rdf:type schema:Organization
    85 Na669de3147994506a6420789e7e0c921 schema:name dimensions_id
    86 schema:value pub.1016114022
    87 rdf:type schema:PropertyValue
    88 Nbd8507e22bcd43b8893920d406fb1e70 schema:name doi
    89 schema:value 10.1007/bf01773532
    90 rdf:type schema:PropertyValue
    91 anzsrc-for:09 schema:inDefinedTermSet anzsrc-for:
    92 schema:name Engineering
    93 rdf:type schema:DefinedTerm
    94 anzsrc-for:0907 schema:inDefinedTermSet anzsrc-for:
    95 schema:name Environmental Engineering
    96 rdf:type schema:DefinedTerm
    97 sg:journal.1083512 schema:issn 0303-402X
    98 1435-1536
    99 schema:name Colloid and Polymer Science
    100 schema:publisher Springer Nature
    101 rdf:type schema:Periodical
    102 sg:person.01320305023.75 schema:affiliation grid-institutes:grid.143643.7
    103 schema:familyName Kondo
    104 schema:givenName T.
    105 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.01320305023.75
    106 rdf:type schema:Person
    107 sg:pub.10.1007/bf01498645 schema:sameAs https://app.dimensions.ai/details/publication/pub.1007822756
    108 https://doi.org/10.1007/bf01498645
    109 rdf:type schema:CreativeWork
    110 grid-institutes:grid.143643.7 schema:alternateName Faculty of Pharmaceutical Sciences, Science University of Tokyo, Shinjuku, 162, Tokyo, Japan
    111 schema:name Faculty of Pharmaceutical Sciences, Science University of Tokyo, Shinjuku, 162, Tokyo, Japan
    112 rdf:type schema:Organization
     




    Preview window. Press ESC to close (or click here)


    ...